Don't Miss:

As the face of Saint Laurent’s new Manifesto fragrance, Jessica Chastain earned herself a front-row seat to the label’s fashion show in Paris this week. What to wear for such an important event? The actress took a page out of YSL history, thanks to a little help from Decades, the Los Angeles luxury vintage boutique, and her stylist, Elizabeth Stewart. “We just ransacked our archives of original Yves Saint Laurents to find the quintessential Parisian look for the show,” Cameron Silver, co-owner and founder of Decades, told InStyle.com. Their pick: A black and white polka-dot Rive Gauche halter dress from the ‘80s. “It created a very modern yet timeless look,” he continued. “Elizabeth did the final fitting right before the show in Paris, since Jessica flew in from New York City where she is in rehearsals for The Heiress. I think my persistent texting may have been slightly distracting to the two of them, but I wanted to make sure we had Jess covered!” And covered she was—her look earned a coveted spot in InStyle’s Look of the Day section.

See Jessica Chastain’s best looks ever.

MORE:
• Our Favorite Looks from Saint Laurent
• Meet Saint Laurent’s New Designer
• Jessica Chastain Models YSL’s New Fragrance

For the first time since Liz Hurley donned it in 1994—instantly making her a household name—the iconic Gianni Versace safety-pin dress has stepped out again! Lady Gaga wore the infamous black silk crepe creation during her visit to Milan (where she met with Donatella Versace), mirroring Hurley’s full look with her newly brown hair and modest gold earrings. The dress caused a fashion frenzy upon its debut, and InStyle editor-at-large Hal Rubenstein counts it as his favorite dress of all time. He describes it in his book 100 Unforgettable Dresses as “devilishly engineered,” with a “ravine-deep neckline, thigh-high slit, double-fastened straps, and open rib cage, secured by a half dozen pronged Medusas.” Versace himself denied that Hurley even had a fitting for the dress, that he just “knew [she] would look simply bellissima, perfetto.” We think Gianni, who died in 1998, would have been gaga for the update. Tell us: do you think Gaga pulls off the look?

Plus, see more Versace creations below!

MORE:
• Stars in Versace
• Try on Lady Gaga’s Hair!
• Gaga Is One of the World’s Most Powerful