By Devan Coggan
Updated October 05, 2015 at 07:45 PM EDT
Credit: Evan Agostini/Invision/AP
  • Movie

To prepare for their roles as a kidnapped young woman and her 5-year-old son, Room stars Brie Larson and Jacob Tremblay spent weeks together off camera, playing with toys and creating decorations in the room where their characters are held captive. And although the film has long since wrapped, the two are still close friends — close friends who adorably wish each other happy birthday on Twitter.

For Larson’s birthday on Oct. 1, Tremblay shared a video of himself on Twitter lip synching 50 Cent. Just a few days later, Larson serenaded her young costar for his 9th birthday.

Directed by Lenny Abrahamson and adapted from Emma Donoghue’s best-selling novel, Room follows the story of 5-year-old Jack, who’s spent his entire life in a locked garden shed, never setting foot outside. Both Larson and Tremblay have won praise and sparked Oscar buzz for their performances, and the film won the People’s Choice Award at the Toronto International Film Festival.

“We would just go in Room every day, just hang out,” Larson said about Tremblay, during a post-screening Q&A in Toronto. “Sometimes Lenny would be there, sometimes he would close the door and just let us be in there. We were able to create a really fun space. We had an awesome time together. He’s my good friend, and I enjoy spending time with him.”

Room hits theaters on Oct. 16.


2015 movie
  • Movie
  • R
  • 113 minutes
  • Lenny Abrahamson