Last weekend Riley Keough, the granddaughter of Elvis Presley (her Mother is Lisa Marie Presley and father is Danny Keough) celebrated her 20th birthday in style by renting out a cool hipster Mexican restuarant in Silverlake, CA for all her close friends. There was free food and open bar all night long.

Riley had a cute princess castle birthday cake which they never cut. It was just suppose to look good I guess.

Chace Crawford, Avril Lavigne, Deryck Whibley, Priscilla Presley, and other celebs shared in the celebrations with Riley.

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