Solange Knowles attends Roberto Cavalli's 'Black Is Never Absolute'... News PhotoAdult,Adults Only,Ankle Strap Shoe,Arts Culture and Entertainment,Asymmetric Clothing,Asymmetric Dress,Big Hair,Brown Hair,Celebrities,CityCenter Las Vegas,Curly,Draped,Dress,Exhibition,Fashion,Full Length,Hand On Hip,High Heels,Las Vegas,Looking At Camera,Nevada,One Person,One Woman Only,Open Toe,People,Photography,Portrait,Print dress,Roberto Cavalli - Designer Label,Shop,Sleeveless Dress,Slit Dress,Solange Knowles,USA,VerticalPhotographer Collection: WireImage 2011 Denise TruscelloLAS VEGAS, NV - APRIL 15: Solange Knowles attends Roberto Cavalli's 'Black Is Never Absolute' photo exhibit in the Roberto Cavalli store at Crystals at CityCenter on April 15, 2011 in Las Vegas, Nevada.Ê (Photo by Denise Truscello/WireImage)