Kat Graham & Aimee Teegarden: Backstage at Bruno Mars!

Kat Graham rocks a backwards cap as she arrives at a private event for the Bruno Mars & Ellie Goulding concert hosted by AQUAhydrate held at Hyde Lounge at The Staples Center on Saturday night (July 27) in Los Angeles.

The Vampire Diaries actress was joined by her CW alum, Aimee Teegarden!

PHOTOS: Check out the latest pics of Kat Graham

In case you missed it, be sure to check out the extended teaser trailer for the upcoming fifth season of The Vampire Diaries.

10+ pictures inside of Kat Graham and Aimee Teegarden…