Mariah Carey's son Moroccan dons Deadpool mask as he and sister Monroe get to meet Ryan Reynolds and Blake Lively

He's obviously a bit of a Deadpool fan boy 

Mariah Carey shared an Instagram of herself with her eight-year-old twins Moroccan and Monroe meeting Ryan Reynolds, 43, and his actress wife Blake Lively, 32, on Sunday.

'Rocky snuck up on an unsuspecting couple wearing a Deadpool mask,' the diva, 49, captioned the cute group photo. 'Will they ever recover?'

Super fun: Mariah Carey shared this snap of herself and twins Monroe and Moroccan in a Deadpool mask as they met Deadpool himself, Ryan Reynolds, and wife Blake Lively on Sunday

Super fun: Mariah Carey shared this snap of herself and twins Monroe and Moroccan in a Deadpool mask as they met Deadpool himself, Ryan Reynolds, and wife Blake Lively on Sunday

The lad is still wearing his mask in the photo and Ryan, 43,  looked fine about it. 

The fun likely went down in Las Vegas where Mariah is prepping for her return to The Colosseum at Caesars Palace for her Christmas concert series All I Want For Christmas Is You for five dates from November 22 to November 30.

Mariah shares her twins with ex-husband Nick Cannon, 39. The friendly exes were married for eight years before divorcing in 2016. 

She has since moved on with her choreographer beau Bryan Tanaka, 36.

Shining star: Mariah twinkled in a black dress at Variety's Power of Women in Beverly Hills on October 11

Shining star: Mariah twinkled in a black dress at Variety's Power of Women in Beverly Hills on October 11

Take the plunge like Mariah in a dress by Alexandre Vauthier

You can’t go wrong with a black dress.

Take style cues from Mariah Carey, who stunned in a design by Alexandre Vauthier at Variety’s Power of Women event in Los Angeles. We’ve previously spotted Kendall Jenner, Rita Ora and Cara Delevingne donning dresses by this coveted designer, so it’s no surprise to see Mariah joining the gang.

Cut from glittery jersey, her dress boasts a plunging cowl neckline, fitted silhouette and thigh-high slit. It's quite the show-stopper, if you ask us!

Unfortunately this dress isn’t available to buy, but you can get your hands on something similar by clicking (right). Or check out the competition from the likes of Boohoo, French Connection and Diane von Furstenberg below.

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The couple have been dating for more than two years, although they have been friends since 2006 after he was hired as one of her back-up dancers for her tour.

Meanwhile, Ryan,and Blake appeared to be on a date as there was no sign of their three daughters.

They share James, four, Inez, three, and a baby girl whom they welcomed over the summer and have yet to reveal her name.

Season's greetings: The diva, who is in Las Vegas for her Christmas concert series All I Want For Christmas Is You, has also released her first seasonal album.

Season's greetings: The diva, who is in Las Vegas for her Christmas concert series All I Want For Christmas Is You, has also released her first seasonal album.

Ryan's fan Roc is going to have a wait to see Deadpool on the bigscreen again.

Deadpool 3 and spin-off X-Force have both been announced but have yet to start pre-production.

 But Ryan can next be seen on the bigscreen in action thriller 6 Underground, due out on December 13.

Ready to rock: Ryan's Deadpool 3 and spin-off X-Force have both been announced but have yet to start pre-production. He will next be seen in 6 Underground, due out on December 13

Ready to rock: Ryan's Deadpool 3 and spin-off X-Force have both been announced but have yet to start pre-production. He will next be seen in 6 Underground, due out on December 13

Mariah Carey's son Moroccan dons Deadpool mask to meet Ryan Reynolds and Blake Lively

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