Dua Lipa made a splash in full ’70s glam during music’s biggest evening. Dua Lipa wore stunning silver Courrèges to the 66th Grammys Awards. Kayla Oaddams via Getty Images The retro ensemble was a perfect look for the star, who was nominated for her disco-inspired track, “Dance The Night,” from the “Barbie” soundtrack. Dua made a subtle nod to her …