Sadie Sink flashes her bra in a sleek black co-ord as Stranger Things star makes a front row appearance at the Chanel Cruise show in Marseille

Sadie Sink showed off her bra in a tight black outfit while attending the Chanel Cruise in Marseille on Thursday.

The Stranger Things actress, 32, wore a black leather-look short-sleeved top, which she unbuttoned from the bottom, leaving only the top button open.

She paired it with a matching fabric skirt that reached past her knees and a pair of chunky black boots.

The American star was joined in the front row by Marion Cotillard and Game Of Thrones actress Nathalie Emmanuel.

Also in attendance at the star-studded show was Lily-Rose Depp, who showed off her washboard abs in a black crop top.

Sadie Sink, 22, showed off her bra in a tight black outfit while attending the Chanel Cruise in Marseille on Thursday

She paired a mostly unbuttoned shirt with a matching fabric skirt that reached past her knees and a pair of chunky black boots.

She paired a mostly unbuttoned shirt with a matching fabric skirt that reached past her knees and a pair of chunky black boots.

The American star was joined in the front row by Marion Cotillard and Game Of Thrones actress Nathalie Emmanuel

The American star was joined in the front row by Marion Cotillard and Game Of Thrones actress Nathalie Emmanuel

The fifth and final series of Stranger Things will air sometime in 2025.

Sadie has been a member of the cast since the second series and plays Max Mayfield, the stepsister of Billy Hargrove (Dacre Montgomery).

The Netflix sci-fi series has made Millie Bobby Brown, who plays main character Eleven/Jane Hopper, a superstar.

In February, the Stranger Things cast’s salary increases were revealed, with Millie, 20, Jon Bon Jovi’s future daughter-in-law, topping the list, according to Puck news.

Stranger Things captured the hearts of viewers when it debuted in 2016 and introduced a host of child actors.

Finn Wolfhard (Mike Wheeler), Caleb McLaughlin (Lucas Sinclair), Gaten Matarrazo (Dustin Henderson), and Noah Schnapp (Will Buyers) joined Millie as the show’s focus group of friends when it first aired.

The show’s main cast returning for season five is joined by the older siblings and their peers: Natalia Dyer (Nancy Wheeler), Charlie Heaton (Jonathan Byers), Joe Keery (Steve Harrington) and Maya Hawke (Robin Buckley) .

Netflix confirmed in January that the hit was finally back in production after delays due to the Hollywood strikes.

L-R Noah Schnapp (Will Buyers), Finn Wolfhard (Mike Wheeler), Gaten Matarrazo (Dustin Henderson) and Caleb McLaughlin (Lucas Sinclair) join Millie as the show's focus group

L-R Noah Schnapp (Will Buyers), Finn Wolfhard (Mike Wheeler), Gaten Matarrazo (Dustin Henderson) and Caleb McLaughlin (Lucas Sinclair) join Millie as the show’s focus group

The show's main cast is joined by Joe Keery (Steve Harrington) and Maya Hawke (Robin Buckley) – both pictured

The show’s main cast is joined by Joe Keery (Steve Harrington) and Maya Hawke (Robin Buckley) – both pictured

The streaming platform took to social media in February to share a photo of the cast and creators Matt and Ross Duffer back together.

But eagle-eyed fans quickly noticed Sadie was in the photo.

It confirmed her return to the cast after her character’s fate was left up in the air in a cliffhanger at the end of series four.

The series ended with Max in a coma after almost being killed by the evil Vecna.

Stranger Things fans have discovered a spoiler after Netflix dropped a production photo from series five's highly anticipated cast meeting on Monday

Stranger Things fans have discovered a spoiler after Netflix dropped a production photo from series five’s highly anticipated cast meeting on Monday