JoJo & Arielle Kebbel are Best Buds at City of Hope Event!

JoJo takes a serious pose as she arrives at City Of Hope‘s 10th Anniversary Songs Of Hope event on Wednesday (June 4) in Brentwood, Calif.

The 23-year-old singer was joined by Vampire Diaries fan favorite Arielle Kebbel.

PHOTOS: Check out the latest pics of JoJo

“Great night! Thanks to @dougdavis for having @gitz9 and I. Was fortunate to be in the presence of and hear wonderful words from industry veterans Clive Davis, Jimmy Jam, and Ron Fair,” JoJo later tweeted.

The month before, Arielle hung out with her former co-stars Phoebe Tonkin and Claire Holt in Paris, France.

10+ pics inside…