Selena Gomez, Victoria Justice & Carly Rae Jepsen attended the premiere of 3D concert movie "Katy Perry: Part of Me" at Grauman's Chinese Theater in Hollywood yesterday.

The hot young Hollywood stars sizzled on the red carpet. Gomez wore a hot pink sequined and feathered frock, while singer Jepsen donned a short electric blue dress with bright yellow pumps.

Justice wore tight leather pants, a floral spagetti strap blouse and sexy lace-up heels.

Perry's behind-the-scenes documentary chronicles the ups and downs from her "California Dreams Tour," including her quick rise to superstardom and her divorce from comedian Russell Brand.

Check out the pics!