Stephanie Pratt of "The Hills" will celebrate her birthday in Body English inside the Hard Rock Hotel and Casino tomorrow night. Stephanie Pratt is Heidi Montag's fiance/husband, Spencer Pratt's, younger sister.
No word on whether other cast members of "The Hills" will be there, but chances are the show is still filming; Pratt's birthday was on the show last year when she celebrated it in Los Angeles.
