Jennifer Lawrence was a dream in this ethereal plunging gown. The "Hunger Games" star, 24, totally dazzled in its flowy silhouette and beaded details. (Photo by Jordan Strauss/Invision for Producers Guild of America/AP Images)
If looks could kill ... J.Lo, 45, looked fierce as ever in a dramatic structured petticoat and sexy stilettos. Slicked-back hair completed her icy look -- a far cry from "Jenny from the Block."
Girl-of-the-moment Gigi Hadid, 19, looked flawless in a one-shoulder pink gown that hugged her fit frame. Her soft-and-pretty makeup completed the fresh look. (Photo by Richard Shotwell/Invision/AP)
We're taking notes from Kristen Stewart, who has been rocking effortlessly-cool looks as of late. The "Still Alice" actress, 24, looked comfortable in slouchy black pants, white crewneck sweatshirt and Keds. (Photo by Bauer-Griffin/GC Images)
Welsh actor Luke Evans, 35, was a total smokeshow in a maroon suit and skinny tie. (Photo by Pierre Suu/GC Images)
All eyes were on Olivia Munn at the "Mortdecai" premiere. 'The Newsroom" star, 34, looked sexy in a black gown with a mesh bodice. (Photo by Jordan Strauss/Invision/AP)
It can be hard to look stylish in a puffy coat in the dead of winter, but Sarah Jessica Parker, 49, added a touch of flair with patchwork jeans and a houndstooth beanie. (Photo by Raymond Hall/GC Images)
It doesn't get much simpler than a black blouse and cropped black slacks, but Lily Donaldson, 27, manages to make it super sexy by unbuttoning her bottom button to show a bit of midriff. That's one trick we're going to make note of! (Photo by Desiree Navarro/WireImage)
Julianne Moore's style is has been totally on-point -- and this intricate lace dress was no exception. We love how the Oscar nominee, 54, kept it dressy with a neat topknot, heels and clutch. (Photo by NCP/Star Max/GC Images)
Blue is definitely Gwyneth Paltrow's color ... but then again, she looks great in just about anything. The "Mortdecai" star, 42, stunned in a simple lapis gown with a wide belt. (Photo by Jason Kempin/Getty Images)
After a few fashion questionables, Jennifer Aniston, 45, opted for her signature LBD -- and she looks fabulous. The robe-like silhouette is a mature take on the classic. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
Behati Prinsloo, 25, didn't compromise comfort for style in an effortless travel look that consisted of a striped sweater, wool beanie and her trusty Docs. (Photo by GVK/Bauer-Griffin/GC Images)
Is it getting hot in here? Ryan Guzman, J.Lo's hunky "Boy Next Door" co-star, looked super hot in cuffed jeans, boots and button down. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
Amber Heard, 28, killed it in a tuxedo-inspired jumpsuit. The actress complemented the vintage look with messy hair and thick top eyeliner. (Photo by Dave J Hogan/Getty Images)
Britain's Kate, Duchess of Cambridge, 33, was glowing while out and about in a bluish gray coat. (AP Photo/Geoff Pugh, Pool)
We're loving this fun skirt on Drew Barrymore! The actress, 39, complemented the flirty print with a black top and simple accessories. (Photo by Richard Shotwell/Invision/AP)
Running errands is hardly a glamorous job, but Alessandra Ambrosio, 33, upped her casual look a smidge with a fun oversized sweater and leather leggings. (Photo by GONZALO/Bauer-Griffin/GC Images)
For celebs, promotions and paparazzi can be a drag, but for entertainment junkies, red carpets and street style snaps are perfect for snagging some fashion inspiration.
This week, J.Lo, 45, was out and about promoting her new movie "Boy Next Door" with her hunky co-star Ryan Guzman. While "Jenny from the Block" stepped out in a few stunning outfits this week, our favorite has to be a black and white petticoat she wore before appearing on "The Daily Show." Cold weather is serious setback for style, but a statement coat is key to elevating your look.
Gigi Hadid is totally having her moment, and based on her style alone, she totally deserves it. The model, 19, sizzled in a form-fitting one-shouldered rose gown. A messy updo and peachy makeup completed her fresh look. In a sea of dark gowns, Hadid stole the spotlight.
Kristen Stewart has also been killing it. The actress has become a street style mainstay thanks to her androgynous cool-girl aesthetic. She was snapped earlier this week in slouchy black pants, a crewneck sweater, and Keds -- hardly revolutionary, but super chic.
See our picks for sexy celeb style for the week of Jan. 18 above.