© @Copyright HELLO! Hello! Magazine looked sensational during her Celebrity Karaoke Club performance on Wednesday in a swishy blue River Island dress.Performing an incredible rendition of Summer Lovin' from Grease, , which can be yours for £55.Featuring a show-stopping pattern, a swooping V-neck, ruched skirt and chic wrap front, Scarlett looked every inch the popstar as she wowed fans with her impressive singing voice.The former competitor is known for her love of bold, statement dressing,