Sexy stars dress to impress

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Sexy Stars: Week of 12/7
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Sexy stars dress to impress
Hot mama! Alessandra Ambrosio, 33, looked killer one week after the VS Fashion Show in a knockout dress that showed off a lot of leg. (Photo by Thos Robinson/Getty Images for ACRIA)
Reese Witherspoon, 38, looked adorable while pumped gas in a leopard-print skirt and black pumps. (Photo by GONZALO/Bauer-Griffin/GC Images)
Jessica Chastain, 37, was the lady in red in a sophisticated wrap dress and her fiery locks. (Photo by ESBP/Star Max/GC Images)
Jaime King, 35, kept it casual at the park in light-wash skinnies and an oversized sweater. A mini Dior bag and her son's sand bucket completed her day-at-the-park look. (Photo by Bauer-Griffin/GC Images)
Kendall Jenner, 19, kept warm in New York in layers upon layers. Luxe pieces like leather leggings and her high-end bomber jacket elevated the look beyond what many might call "homeless chic." (Photo by Raymond Hall/GC Images)
We can't take our eyes off of Orlando Bloom's casual red carpet look. "The Hobbit" star, 37, paired his suit with a simple button-down shirt and sneakers. (Photo by Gregg DeGuire/WireImage)
Kim Kardashian, 34, was a bit more covered up than usual in a army green body con dress and military-inspired leather trench. (Photo by Raymond Hall/GC Images)
Director Sofia Coppola, 43, looked effortlessly chic in a simple black frock with a fun collar. (Photo by Dimitrios Kambouris/Getty Images)
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By CHELSEA HUANG

A new week just means more red carpets, events, parties and galas for Hollywood's sexiest stars.

This week, Alessandra Ambrosio, 33, stood out in an extremely daring gown that only a supermodel could get away with. The Victoria's Secret Angel is used to baring (almost) all on the catwalk, but this time, she flaunted her hot bod on the red carpet.

Emma Roberts opted for a more conservative, yet totally adorable, look for a separate event. The "American Horror Story" actress, 23, channeled the '60s in a hot pink number with a fun collar. Mary Janes and her pixie cut completed her retro look.

Reese Witherspoon, 38, was spotted pumping gas in a casual chic outfit that consisted of a cheeky leopard-print skirt and pointy stilettos. A messy bun and oversized scarf kept the look daytime-friendly.

See the rest of our picks for this week's sexy celeb style.

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