Sexy Stars: Christina Milian wears super sheer dress and Lady Gaga gets bold in bizarre bra

Woah there! Celebs got racy with their hottest outfits this week -- and they didn't opt for the most conservative styles.

Christina Milian made jaws drop in a super sheer blue number. The singer and actress' see-through dress gave everyone a peek of what was hiding underneath.

Fresh off her successful Victoria's Secret Fashion Show performance, Lady Gaga hit the streets in an outrageous bra-and-skirt combo that made heads turn.

Check out other sexy looks from this week in the slideshow below:

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Sexy Stars: Week of December 4
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Sexy Stars: Week of December 4

Cutout queen! Halsey attended the 2016 Billboard Women in Music Awards in New York City in a white dress that left little to the imagination.

(Photo: Getty)

Christina Milian let everything hang out in this super sheer blue dress. The actress and Grammy nominated singer and songwriter left little to the imagination in the show-stopping number.

(Photo: Getty)

Woah there! Lady Gaga stepped out showing some major skin in a strappy bra top with a leather skirt with a unique hemline. 

(Photo: Getty)

Singer Bebe Rexha's metallic slip dress was a wardrobe malfunction waiting to happen at the British Fashion Awards.

(Photo: Getty)

Lily-Rose Depp looked like a pro as she strutted her stuff down the Chanel runway in Paris. The model wore a two piece crop top and skirt combo that showed off her incredible abs!

(Photo: Getty)

Model Elsa Hosk attended the Victoria's Secret Fashion Show viewing party wearing a sheer frock. She paired the sexy look with some thigh-high boots.

(Photo: Getty)

Gigi Hadid won 'Model of the Year' at the British Fashion Awards -- and this sexy number proved why. The older Hadid sister stunned in a silver jumpsuit with a dramatic train. Fierce!

(Photo: Getty)

Hailey Baldwin put on a leggy display at her birthday party in Australia. The blonde bombshell kept it simple with a strapless embroidered mini dress and cobalt blue heels that elongated her toned pins.

(Photo: Getty)

Jasmine Tookes looked absolutely sexy at the launch of John Hardy’s first US flagship and Artisan in Residence workshop in New York City. The Victoria's Secret model rocked a slinky black dress with a belt that showed off her tiny waist.

(Photo: Getty)

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