Olivia Rodrigo Celebrates Billie Eilish's New Album 'Happier Than Ever' Release

Olivia Rodrigo stepped out in a vibrant pink and purple ensemble to celebrate Billie Eilish‘s brand new album during a release party in Los Angeles on Thursday night (July 29).

The 18-year-old singer and actress was just one of the many stars at the private bash to celebrate the release of Happier Than Ever, Billie‘s brand new album.

Click inside to see who else attended!…

Ben Platt, Dove Cameron, and siblings Willow and Jaden Smith were also spotted inside the bash, as Billie counted down the moments until her album was out.

Will.I.Am., Khalid, her brother Finneas and boyfriend Matthew Tyler Vorce were also spotted at the party to celebrated the release.

Just after the release of the album, Billie celebrated by jumping into the party’s swimming pool!

A source then told People that Billie was seen dancing with Matthew.

“When the album dropped, they were very sweet,” the insider shared. “He was hanging out with her family. He seems very much a part of their life. She had the biggest smile on her face.”

The release date for Billie‘s new album, also marked Finneas‘ birthday, and while speaking at the event, she invited partygoers to join her to sing “Happy Birthday” to him.

Stream Happier Than Ever on JustJaredJr.com now!

Check out 15+ pics inside from Billie Eilish‘s album release party!