Kelli Berglund Wishes 'Lab Rats' Co-Star Tyrel Jackson Williams a Happy Birthday!

Kelli Burglund is a classic beauty in a black-and-white dress at the Dream Builders Project’s A Brighter Future for Children Benefit on Saturday (March 15) in Beverly Hills, Calif.

The 18-year-old actress was joined at the event by Vampire Diaries actress Kat Graham.

PHOTOS: Check out the latest pics of Kelli Berglund

Over the weekend, Kelli wished her Lab Rats‘ co-star Tyrel Jackson Williams a happy birthday.

“Wanna wish @Tyreljwill a very happy 17th birthday! Love ya tj,” she tweeted.

FYI: Kat is wearing a Claes Iversen suit and Gio Dev pumps.

10+ pics inside of Kelli Berglund and Kat Graham walking the red carpet in Beverly Hills…