It’s Sia’s Birthday!

Sia celebrated her 43rd birthday Tuesday with an epic movie night at Kim Kardashian’s house.

The singer joined Kim and Jennifer Lopez for a private screening of J.Lo’s new movie, Second Act. Sia wrote the film’s anthem, “Limitless,” and even appeared in an Instagram post on J.Lo’s page.

“About last night!!! Happy Birthday @siamusic,” Jennifer wrote, accompanying a video of her and Sia. “This amazing artist and songwriter wrote the anthem #limitless for my new movie Second Act which is out this Friday the 21st!!!”

J-Lo adds, “Aaaanddd…. the Video for Limitless which I directed will be debuted tomorrow [Thursday] with a live YouTube chat with me!! Tune in!!! We are Limitless!!”

Kim also posted about the night on her Instagram Story, gushing over J.Lo and wishing Sia a happy birthday.

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“Never in my life would I have imagined that my idol would want to come over and have a movie night with me,” Kim said of Jennifer. “My inspiration for everything has always been Jennifer Lopez.”