Country music's leading ladies stepped up their red-carpet A-game for last night's Academy of Country Music Awards, donning diaphanous floor-length gowns, sporty minidresses, and slick LBDs for the occasion. While we can always count on songstress Carrie Underwood to deliver her signature Old Hollywood glam — this time in a strapless Abed Mahfouz couture creation — the evening's entertainer of the year Taylor Swift mixed it up with blunt bangs, sultry eye makeup, and a modern white J. Mendel number. LeAnn Rimes jumped on the Stella McCartney bandwagon in one of the designer's ultracool sporty-meets-chic mesh-infused minis, Miranda Lambert (who nabbed both album of the year and female vocalist top honors) radiated in a gilded Randi Rahm halter-style gown, and Nicole Kidman looked supersophisticated in a collared L'Wren Scott LBD. These starlets kept a no-holds-barred policy on their ACM styling and we're loving the polished results. Now it's time for you to decide who takes home the best dressed award. Weigh in below!