Lady Gaga knows how to turn up the heat on any red carpet she graces.The 35-year-old singer and actress stunned at this years' Critics Choice Awards rocking a revealing, plunging black and gold gown on the red carpet outside the The Savoy Hotel in London.The star wore her hair up and in retro-curls that continued to give the classic Hollywood vibe she rocked hours before at this year's BAFTA Awards.This year's Critics Choice Awards come on the heels of the BAFTA Awards, which is why many of the nominees attended at the ceremony in London. Gaga's BAFTA outfit was equally striking — an emerald green velvet and silk taffeta evening gown by Ralph Lauren.