Jennifer Aniston's ex Justin Theroux says he is 'proud' of her for joining Instagram: 'The world's about to learn what a hilarious woman she is'

Jennifer Aniston joined Instagram last week with a Friends reunion photo that caused problems for the app but earned her 15.7M followers in a matter of days.

Soon after the 50-year-old A-list movie star's estranged husband Justin Theroux said 'woot woot' in a caption.

And this week, the 48-year-old actor - who will next appear in the live-action film Lady And The Tramp - told Extra that he is 'proud' of the beauty for joining social media after all these years.  

He is proud: Justin Theroux is proud of ex Jennifer Aniston for joining Instagram, he told Extral seen on Tuesday in NYC

He is proud: Justin Theroux is proud of ex Jennifer Aniston for joining Instagram, he told Extral seen on Tuesday in NYC

And he told the site the Cake actress gave him no head's up about her move to Instagram.

'She has sworn she was not gonna do it, and then she did it. I'm so proud of her — I thought it was so great,' said The Leftover star who calls New York City home.

He continued, 'The world's about to learn what a hilarious woman she is if they don't already… She's gonna be good at this.'

Real life friends: Her first post was a a selfie she took with with her former friends co-stars Courteney, Matt, David, Matthew and Lisa

Real life friends: Her first post was a a selfie she took with with her former friends co-stars Courteney, Matt, David, Matthew and Lisa

Real life: Here is the cast is seen at the 54th Annual Emmy Awards in 2002 where Aniston won

Real life: Here is the cast is seen at the 54th Annual Emmy Awards in 2002 where Aniston won

He also talked about his live-action Lady And The Tramp movie, which opens November 12.

'It feels more contemporary, even though it is still set in the period.' 

On Tuesday Justin was seen getting out of an SUV in New York City as he made him way to Good Morning America.

Busy day: Justin was seen getting out of an SUV in New York City as he made him way to Good Morning America. The actor wore a black blazer over a black shirt and added black jeans with light brown suede boots adding Ray-Ban sunglasses

Busy day: Justin was seen getting out of an SUV in New York City as he made him way to Good Morning America. The actor wore a black blazer over a black shirt and added black jeans with light brown suede boots adding Ray-Ban sunglasses

His best friend: He was holding onto a purple leash for his Pit Bull dog named Kuma - bear in Japanese. Theroux rescued the dog from Texas where it had been wandering the streets after Hurricane Harvey

His best friend: He was holding onto a purple leash for his Pit Bull dog named Kuma - bear in Japanese. Theroux rescued the dog from Texas where it had been wandering the streets after Hurricane Harvey

The actor wore a black blazer over a black shirt and added black jeans with light brown suede boots adding Ray-Ban aviator sunglasses.

He was holding onto a purple leash for his Pit Bull dog named Kuma - bear in Japanese.

Theroux rescued the dog from Texas where it had been wandering the streets after Hurricane Harvey.

In her first post, the Friends star posed with Courteney Cox, Matt LeBlanc, Lisa Kudrow, Matthew Perry and David Schwimmer. 

Good terms: Jennifer currently following 83 people - including Justin

Good terms: Jennifer currently following 83 people - including Justin

Happier times: Aniston and Theroux pictured in 2017 at the Vanity Fair Oscar party

Happier times: Aniston and Theroux pictured in 2017 at the Vanity Fair Oscar party

She cheekily wrote: 'And now we're Instagram FRIENDS too. Hi Instagram,' adding a waving hand emoji. 

Her bio on her Instagram page says: 'My friends call me Jen' with a profile picture of her pretending to scream. 

She then shared a clip of herself in character as a morning TV show star from The Morning Show where she breaks her phone as her glam team look on.

Mad Jenny: She then shared a clip of herself in character as a morning TV show star from The Morning Show where she breaks her phone as her glam team look on

Mad Jenny: She then shared a clip of herself in character as a morning TV show star from The Morning Show where she breaks her phone as her glam team look on

Her third post was a closeup snap of her face as a child
She added a shot in a similar hat from a recent InStyle shoot

Throwback Thursday: Her third post was a closeup snap of her face as a child. She added a shot in a similar hat from a recent InStyle shoot

Jennifer was reacting to breaking the internet.

Her third post was a closeup snap of her face as a child. She added a shot in a similar hat from a recent InStyle shoot.

And her most recent post was of her getting ready for a photo and then the finished product. 

Glam team: Her third post was a closeup snap of her face as a child. She added a shot in a similar hat from a recent InStyle shoot

Glam team: Her third post was a closeup snap of her face as a child. She added a shot in a similar hat from a recent InStyle shoot

Finished product: The Murder Mystery star looked polished for the cover of Variety

Finished product: The Murder Mystery star looked polished for the cover of Variety

Jennifer and Justin began dating in May 2011; the actors got engaged on August 10, 2012 and tied the knot on August 5, 2015.

The former flames separated at the end of 2017 but remain on good terms.

Prior to Justin, Jennifer was married to Brad Pitt; they dated in 1998 and got married on July 29, 2000; they split in January 2005 and he went on to marry Angelina Jolie, whom he is in the midst of divorcing.

Back on TV: She plays a morning TV show host in her next project

Back on TV: She plays a morning TV show host in her next project

Jennifer Aniston's ex Justin Theroux says he is 'proud' of her for joining Instagram

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