Diamonds were the standout star on both of Dua Lipa’s performance gowns at the Oscars preparty benefit hosted by the Elton John AIDS Foundation. The Future Nostalgia singer started her string of solo performances in a black gown and later changed into a sparkling outfit to perform duets of “Bennie and the Jets” and “Love Again” with Elton John. Dua Lipa is no stranger to a very sexy red carpet moment, particularly if it’s sparkling. Her sparkling butterfly Grammys dresses are already some of the defining red carpet outfits of 2021. But while Lipa usually goes for ’90s-inspired dresses or sexy, sheer looks, her Oscars preparty gowns were expectedly formfitting but impressively elegant. Dua Lipa’s first look was a black velvet high-neck and lon...