Rihanna left little to the imagination Thursday night when she stepped out to catch pal Jay-Z perform at The Forum in Inglewood, California. She wore a skintight leather LBD complete with a matching trench coat and strappy stilettos. The 29-year-old paired her dominatrix chic look with a voluminous high ponytail and scarlet lip. However, our favorite bad gal did nothing to put her recent engagement rumors to rest, hiding her wedding ring finger under her jacket.