Singers Katy Perry and Steven Tyler attend the Lacoste beautiful desert pool party. (Joe Scarnici / Getty Images)
Joe Jonas poses at the party. (Joe Scarnici / Getty Images)
Fashion blogger Aimee Song, right, and a guest. (Joe Scarnici / Getty Images)
Actor Chord Overstreet. (Joe Scarnici / Getty Images)
Kendall Jenner, left, and a guest. (Joe Scarnici / Getty Images)
From left to right, the girls from Haim: Alana Haim, Danielle Haim and Este Haim. (Joe Scarnici / Getty Images)
Julianne Hough. (Joe Scarnici / Getty Images)
Actors Emma Roberts and Evan Peters. (Joe Scarnici / Getty Images)
Actors Lea Michele, left and Jena Malone. (Joe Scarnici / Getty Images)
