Catherine Zeta-Jones is fabulous in floral frock as she and Michael Douglas lead the stars at Lady Gaga's concert at the historic Apollo Theater

Her fans were teased earlier this week with the possibility of a surprise set at England's Glastonbury Festival.

But Lady Gaga, 33, lured her famous fans out for a special performance Monday night at Harlem's historic Apollo Theater in New York City.

Leading the parade of famous figures were longtime couple Michael Douglas, 74, and Catherine Zeta-Jones, 49, as well as Neil Patrick Harris, 46, and his husband David Burtka, 44.

Star power: Michael Douglas, 74, and Catherine Zeta-Jones, 49, led the stars ahead of Lady Gaga's performance at Harlem's historic Apollo Theater on Monday

Star power: Michael Douglas, 74, and Catherine Zeta-Jones, 49, led the stars ahead of Lady Gaga's performance at Harlem's historic Apollo Theater on Monday

Gaga was seen earlier in the day in an all-black ensemble, and Michael seems to have matched her with his black shirt and matching trousers.

Catherine brought enough color for the two of them with a striking red, black and white dress. 

The nearly floor-length outfit featured abstract butterfly-like designs and featured a plunging top to highlight her cleavage.

The Traffic star paired the outfit with a set of black open-toe heels and wore a thin black ribbon around her neck.

She carried a small black clutch and had her raven tresses pulled back in a ponytail. 

Back in black: As her high-profile fans arrived at the theater, Lady Gaga was seen entering the venue in a striking black leather outfit

Back in black: As her high-profile fans arrived at the theater, Lady Gaga was seen entering the venue in a striking black leather outfit

Revealing: The look featured an edgy black bandeau tied together with multiple long strings

Revealing: The look featured an edgy black bandeau tied together with multiple long strings

Showing some skin: She paired her top with a high-waisted black leather skirt and black gloves that extended beyond her elbows and had her name printed at the top

Showing some skin: She paired her top with a high-waisted black leather skirt and black gloves that extended beyond her elbows and had her name printed at the top

As her high-profile fans arrived at the theater, Lady Gaga was seen entering the venue in a striking black leather outfit.

The look featured an edgy black bandeau tied together with multiple long strings.

The skimpy look highlighted her trim tummy and bared her shoulders.

She paired her top with a high-waisted black leather skirt and black gloves that extended beyond her elbows.

The peroxide blonde singer and actress toted a black handbag as she prepared for the performance. 

Matching couple: Neil Patrick Harris showed off a new mustache and a bowler hat, while his husband David Burtka wore a fierce leopard print shirt and a white jacket

Matching couple: Neil Patrick Harris showed off a new mustache and a bowler hat, while his husband David Burtka wore a fierce leopard print shirt and a white jacket

Colorful display: The couple were joined by drag queen William, who flaunted her figure in a two-piece outfit covered in multicolored Keith Haring designs

Colorful display: The couple were joined by drag queen William, who flaunted her figure in a two-piece outfit covered in multicolored Keith Haring designs

Also among those excited to see the Born This Way singer perform were Neil Patrick Harris and his husband David Burtka.

The How I Met Your Mother star went with a simple black short-sleeve shirt and charcoal jeans, but he spiced up the look with a black bowler hat, black flower print shoes, and a new mustache.

David looked fierce in a leopard print shirt, which he paired with a white jacket and black jeans.

The couple were joined by drag queen William, who flaunted her figure in a two-piece outfit covered in multicolored Keith Haring designs.

Food God Jonathan Cheban arrived in a simple gray-blue T-shirt, which he jazzed up with a diamond encrusted necklace, bracelets and a luxury wrist watch.

No fuss: Food God Jonathan Cheban arrived in a simple gray-blue T-shirt, which he jazzed up with a diamond encrusted necklace, bracelets and a luxury wrist watch

No fuss: Food God Jonathan Cheban arrived in a simple gray-blue T-shirt, which he jazzed up with a diamond encrusted necklace, bracelets and a luxury wrist watch

Flower power: Saturday Night Live star Heidi Gardner was a vision of spring in her pastel floral skirt and matching hair bow
Blonde beauty: Beth Ostrosky Stern, wife to Howard Stern, showed off her lovely long blonde locks over a spotted print gown and a white Gucci handbag

Flower power: Saturday Night Live star Heidi Gardner was a vision of spring in her pastel floral skirt and matching hair bow. Beth Ostrosky Stern, an actress and the wife of radio legend Howard Stern, showed off her lovely long blonde locks over a spotted print gown and a white Gucci handbag.

Rocker chic: The Sopranos actor and E Street Band stalwart Steven Van Zandt had on his trademark bandana and a colorful multi-patterned shirt, while his wife Maureen Van Zandt kept things simple with a midnight blue outfit with frilly sleeves

Rocker chic: The Sopranos actor and E Street Band stalwart Steven Van Zandt had on his trademark bandana and a colorful multi-patterned shirt, while his wife Maureen Van Zandt kept things simple with a midnight blue outfit with frilly sleeves

Preaching: Prosperity gospel preacher Joel Osteen wore a navy blazer with a gray–blue shirt, while his wife Victoria Osteen had on an elegant black dress with cut-outs over her short sleeves

Preaching: Prosperity gospel preacher Joel Osteen wore a navy blazer with a gray–blue shirt, while his wife Victoria Osteen had on an elegant black dress with cut-outs over her short sleeves

Saturday Night Live star Heidi Gardner was a vision of spring in her pastel floral skirt and matching hair bow.

Beth Ostrosky Stern, an actress and the wife of radio legend Howard Stern, showed off her lovely long blonde locks over a spotted print gown and a white Gucci handbag. 

The Sopranos actor and E Street Band stalwart Steven Van Zandt had on his trademark bandana and a colorful multi-patterned shirt, while his wife Maureen Van Zandt kept things simple with a midnight blue outfit with frilly sleeves.

Prosperity gospel preacher Joel Osteen wore a navy blazer with a gray–blue shirt, while his wife Victoria Osteen had on an elegant black dress with cut-outs over her short sleeves.

Fashion visionary Alexander Wang went with a super casual look for the concert, with a 'Stay Hungry' graphic T-shirt, black shorts and Adidas sneakers.

Comedian Jim Norton also rocked a low-key look, wearing a gray hoodie over a charcoal shirt and black jeans.

Casual look: Fashion visionary Alexander Wang went with a super casual look for the concert, with a 'Stay Hungry' graphic T-shirt, black shorts and Adidas sneakers
Funny man: Comedian Jim Norton also rocked a low-key look, wearing a gray hoodie over a charcoal shirt and black jeans

Casual guys: Fashion visionary Alexander Wang went with a super casual look for the concert, with a 'Stay Hungry' graphic T-shirt, black shorts and Adidas sneakers. Comedian Jim Norton also rocked a low-key look, wearing a gray hoodie over a charcoal shirt and black jeans

Not a drag: Drag queen Alaska Thunderf*** highlighted her washboard abs in a black skirt and bra combo, while wearing an enormous beehive hairdo. She was joined by Ginger Minj, who wore an edgy black blazer opened to reveal her bra

Not a drag: Drag queen Alaska Thunderf*** highlighted her washboard abs in a black skirt and bra combo, while wearing an enormous beehive hairdo. She was joined by Ginger Minj, who wore an edgy black blazer opened to reveal her bra

Fierce fashion: Sharon Needles left her drag look at home, instead wearing a punky metal-studded leather vest and a holey white graphic T-shirt
Floral look: Shangela also went with a more relaxed outfit, wearing a black, beige and pink floral shirt and black pants

Fierce fashion: Sharon Needles left her drag look at home, instead wearing a punky metal-studded leather vest and a holey white graphic T-shirt. Shangela also went with a more relaxed outfit, wearing a black, beige and pink floral shirt and black pants

Drag queen Alaska Thunderf*** highlighted her washboard abs in a black skirt and bra combo, while wearing an enormous beehive hairdo.

She was joined by Ginger Minj, who wore an edgy black blazer opened to reveal her bra.

Sharon Needles left her drag look at home, instead wearing a punky metal-studded leather vest and a holey white graphic T-shirt.

Shangela also went with a more relaxed outfit, wearing a black, beige and pink floral shirt and black pants.

Drag queen Aquaria showed off a stunning midnight blue rob with black feathered sleeves at the LGBTQ-friendly show. 

Stunning style: Drag queen Aquaria showed off a stunning midnight blue rob with black feathered sleeves at the LGBTQ-friendly show

Stunning style: Drag queen Aquaria showed off a stunning midnight blue rob with black feathered sleeves at the LGBTQ-friendly show

Suited up: American Idol star Adam Lambert went with a classy double-breasted pinstripe suit, which he paired with pink sandals
Icon: Recording industry legend Clive Davis was similarly refined in a black suit with a lime-green tie

Suited up: American Idol star Adam Lambert went with a classy double-breasted pinstripe suit, which he paired with pink sandals. Recording industry legend Clive Davis was similarly refined in a black suit with a lime-green tie

Happy couple: Last Week Tonight star John Oliver kept his outfit simple with a navy blue shirt, dark jeans, and a gray baseball cap

Happy couple: Last Week Tonight star John Oliver kept his outfit simple with a navy blue shirt, dark jeans, and a gray baseball cap

Baba Booey: Gary Dell'Abate, longtime producer for Howard Stern, went with an all-black polo shirt and jeans combo, and his wife Mary Caracciolo had a similarly monochrome look

Baba Booey: Gary Dell'Abate, longtime producer for Howard Stern, went with an all-black polo shirt and jeans combo, and his wife Mary Caracciolo had a similarly monochrome look

American Idol star Adam Lambert went with a classy double-breasted pinstripe suit, which he paired with pink sandals.

Recording industry legend Clive Davis was similarly refined in a black suit with a lime-green tie.

Last Week Tonight star John Oliver kept his outfit simple with a navy blue shirt, dark jeans, and a gray baseball cap.

His wife Kate Norley shone in a silky baby-blue patterned dress.

Gary 'Baba Booey' Dell'Abate, longtime producer for Howard Stern, went with an all-black polo shirt and jeans combo, and his wife Mary Caracciolo had a similarly monochrome look. 

Yoshiki, founder of the band X Japan, rocked out with a long black overcoat, which he paired with knee-high black boots and a white and gray shirt and scar combo.

Rocking out: Yoshiki, founder of the band X Japan, rocked out with a long black overcoat, which he paired with knee-high black boots and a white and gray shirt and scar combo.

Rocking out: Yoshiki, founder of the band X Japan, rocked out with a long black overcoat, which he paired with knee-high black boots and a white and gray shirt and scar combo.

Catherine Zeta-Jones and Michael Douglas lead the stars at Lady Gaga's concert at the Apollo Theater

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