Julianne Hough & Nina Dobrev: Party Bus for Selena Gomez's Birthday!

Julianne Hough and her BFF Nina Dobrev get silly in these new Instagram photos from Selena Gomez‘ birthday party on Saturday (July 27) in Malibu, Calif.

“Party bus!!!! #selenaareyouready?!?!” Julianne, 25, tweeted. “Gypsy girls… #wild #free”

PHOTOS: Check out the latest pics of Julianne Hough

Selena‘s ex-boyfriend Justin Bieber was also spotted at the party, along with Jaden Smith and Dylan O’Brien.

Earlier that day, Julianne met up with some pals at The London in West Hollywood. The following day, she was seen changing outfits while running errands.

FYI: Julianne is carrying an Alternative Apparel bag.

35+ pictures inside of Nina Dobrev and Julianne Hough out together…