Singer Selena Gomez and her sister Gracie Teefey wore matching outfits at the 'Frozen II' premiere held at Hollywood's Dolby Theatre on Thursday. Selena kept her braids loose like film's character Princess Anna, while her sister kept a braid like Queen Elsa. Gomez wrote on Instagram, "Hope I'm officially the best big sissy ever now...she was LIVING her best life!!"