Demi Lovato and her fellow The X Factor judges and finalists partied in LA last night. Demi stood out in her Topshop red shift dress ($100), which she topped with a studded black leather jacket by Religion Lynch. Matching red lips and black patent Christian Louboutin peep-toe pumps completed her red-carpet look. Score Demi's exact little red dress to wear all yearlong. During Fall, pair it with leggings or opaque tights and booties, or throw on a chunky sweater to give it a separates effect. Come Spring and Summer, ditch the tights and boots and throw on a denim jacket for a fabulous warm-weather vibe.