Billie Eilish Attends Olivia Rodrigo's Concert in L.A. (See Pics!)

Billie Eilish greets some fans as she arrives at Olivia Rodrigo‘s concert at The Greek in Los Angeles on Wednesday night (May 25).

The 20-year-old Grammy and Oscar-winning singer wore a baggy graphic t-shirt and blue pants for her outing, pairing the look with a red baseball cap and sneakers.

The “Happier Than Ever” performer was seen chatting with friends as she hung out outside the venue.

Both Billie and Olivia were spotted heading to after parties after the 2022 Met Gala earlier this month. Check out all the photos here!

You can also see all the pics of Billie and her brother Finneas‘ red carpet looks here.

Click through the gallery for the latest photos of Billie at Olivia Rodrigo’s concert in Los Angeles…