Sexy Stars: A look back at 2015's most memorable red carpet looks
Lady Gaga swapped costume for glam in a fabulous sequined gown, a fabulous gray 'do and sensational jewels. A thick cat-eye and strappy sandals completed her bombshell look. (Photo by Kevin Mazur/WireImage)
Babe alert! Gwen Stefani is one hot mama. The singer, who hasn't aged a day, rocked a to-die-for Atelier Versace jumpsuit with the perfect amount of edge. (Photo by Larry Busacca/Getty Images for NARAS)
Mixing stripes is tricky business, but Sienna Miller, 33, looked nothing but chic in her skirt and blouse combo. (Photo by Patricia Schlein/Star Max/GC Images)
Kate Hudson, 35, got a bit, um, cheeky in this super sexy Versace cut-out dress. We've seen all types of cut-outs before but this sexy cut takes the cake. (Photo by Jacopo Raule/GC Images)
Gigi Hadid, 20, stunned in an outrageously sexy white long-sleeved gown with an open front and high slit. Nude peep toe booties completed her head-turning look.
(Photo by Dominique Charriau/WireImage)
Karlie Kloss, 22, stunned in a dazzling sheath dress with a matching collar. Flawless hair and makeup completed the statuesque stunner's jaw-dropping look.
(Photo by Ian Gavan/Getty Images)
Jourdan Dunn, 25, showed more skin than not in a revealing sequined dress that left her entire side exposed.
It's not an easy look to mimic, but check out some fun sequined styles here.
(Photo by Samir Hussein/WireImage)
Emily Ratajkowski, 24, rocked a gorgeous satin wide-legged pant with a matching cropped tube top that flaunted her teeny-tiny waist. Natural makeup and undone hair completed the actress's flawless, effortless look.
Sienna Miller is just one of those effortless beauties. The blondie looked fabulous in her embroidered gown with a plunging neckline and a cropped hem that showed off her strappy sandals. (Photo by Frazer Harrison/Getty Images)
'Modern Family' star, Sarah Hyland rocks a curve-hugging, off-the-shoulder dress, accessorized with simple jewelry and nails to match! We are totally loving this look!
Carey Mulligan wowed in an adorable Alexander McQueen midi dress with ballerina-inspired pumps.
(Photo by Andrew Toth/FilmMagic)
BEST: Selena Gomez wowed in a gorgeous oxblood halter dress with a demure slit and pin-straight hair. Simple makeup and minimal accessories let the stunning frock speak for itself.
(Photo by John Shearer/Getty Images)
BEST: Zendaya was a breath of fresh air in a pretty, pink lace mini with a Peter Pan collar. Rosy cheeks and lips completed the actress's unique ensemble.
(Photo by Jason Merritt/Getty Images)
BEST: Gigi Hadid nabbed the spotlight in a ultra-sexy white two-piece with a lace-up bralette and thigh-high slit. A slick, cropped 'do completed the model's white-hot ensemble.
(Photo by Jason Merritt/Getty Images)
Jennifer Lawrence, 25, stunned in a simple white slip dress with a sexy neckline. A wavy coif and nude makeup completed her gorgeous minimalist look.
(Photo by James Devaney/WireImage)
"Spectre" star Lea Seydoux, 30, was a vision in a gorgeous blush gown with an embellished neckline and a wispy updo.
(MIGUEL MEDINA/AFP/Getty Images)
Taraji P. Henson, 45, was a total bombshell in a gorgeous black midi dress with a midriff-bearing cutout.
(Photo by Brian Ach/Getty Images for Accessories Council)
Julianne Hough, 27, flaunted her fab dancer's figure in a black gown with an ab-exposing opening.
(Photo by David Livingston/Getty Images)
Zoe Saldana, 37, looked effortlessly fabulous in an off-the-shoulder black midi dress and simple black pumps.
(Photo by Lester Cohen/WireImage)
Cate Blanchett, 46, was breathtaking in a mixed-media ankle-length gown with a high-low hem and stunning beaded and embroidered details.
(Photo by Gilbert Carrasquillo/GC Images)
What divorce? Gwen Stefani just split from her husband, Gavin Rossdale, and she definitely hit the AMA Awards in one of the best revenge dresses we've ever seen. The flouncy sleeves and sheer tulle skirt showed off her enviable pins. (Photo by Jeffrey Mayer/WireImage)
Rachel McAdams, 37, was effortlessly chic in a black jumpsuit with sheer, ruched panels. A tousled cropped bob and red lips completed her stunning look.
Gigi Hadid, 20, was the talk of the town in a ultra-sexy white set that consisted of a laced bralette and thigh-exposing skirt.
Pair this top with your own skirt to mimic the sexy look.
(Photo by Steve Granitz/WireImage)
Heidi Klum looked like modern-day royalty in a regal, eggplant Zac Posen ballroom gown and gorgeous jewels.
(Photo by Isa Foltin/Getty Images for Kryolan)
Jessica Alba, 34, was a breath of fresh air in a easy, breezy yellow maxi dress and a simple updo.
(Photo by Charley Gallay/Getty Images for Baby2Baby)
Selena Gomez, 23, channeled her "Bad Blood" character in an ultra-sexy, plunging black leather gown with studs and rivets. Undone hair kept the wild look sleek and and sophisticated.
(Photo by Gilbert Carrasquillo/FilmMagic)
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Lady Gaga totally stunned this year when she ditched her classic armadillo heels for sophisticated, ultra-glam styles. The singer turned heads at the Grammys in February in a slinky, silver gown with a plunging neckline and a thigh-high slit that marked a major career shift for the pop songstress-turned-jazz crooner.
Gaga wasn't the only star this year to knock it out of the park on the red carpet. From Rihanna's gorgeous pink Giambattista Valli couture gown at the Grammys to Gwen Stefani's revenge gown at the American Music Awards and everything inbetween, it has been an incredible year for daring celeb styles.
As they say, with big risk comes big reward. Click through the gallery above to see some of the sexiest red carpet looks that paid off in 2015.