The Stars in Our Top 10 Are Giving Us Serious Fashion Flashbacks

One of the reasons we've been so excited about Lilly Pulitzer's Target collaboration is because it's such an iconic brand: even Jackie O was a big fan back in the '60s. Kate Bosworth wore this pretty printed minidress to the collection's launch party, adding a contrast with black flats and a Mark Cross bag.

Kate's fringed jumpsuit may seem super '70s, but we're also getting some Spice Girls vibes as well: she rocked the design, made by Posh herself, to a dinner celebrating the Victoria Beckham Collection.

Reese combined a bunch of different decades with this look: the navy Stella McCartney dress was totally saying '40s, but those pretty platforms were all about the '70s. The combo worked: this star always looks stunning.

Fringe, shoulder embellishments — Olivia looked like she just walked out of a Gastby party in this lovely Marchesa design. The star wore the dress to the opening night of Finding Neverland on Broadway and finished it off with Stuart Weitzman Nudist heels.

Speaking of Gatsby, actress Carey Mulligan — who starred in the film — was the epitome of old Hollywood glamour in Dior as she walked the red carpet at the world premiere of Far From the Madding Crowd.

This classic, royal-blue Christopher Kane design made Rose Byrne steal the spotlight at the premiere of Adult Beginners. It brightened up her skin tone and was a lovely, somewhat unexpected choice for a star who loves the modern look.

While Kate's curve-hugging Stella McCartney dress is definitely popular in today's world, we had to include her in our list. The bow detail, the vibrant color, those Christian Louboutin Athena sandals: simply breathtaking.

Another winning Stella McCartney look graced the red carpet at the Avengers: Age of Ultron premiere. We're fans of this high-low dress, which is reminiscent of the layered look that's becoming increasingly more popular in Hollywood.

It's almost like Isabel stepped right out of the swinging '60s with this white bell-sleeve dress, which she wore to the LA premiere of Dior and I.

A bit of '90s with a modern, sexy twist: we're obsessing over Maggie Gyllenhaal's H&M suit, which she paired with a sheer top and a pop of red shoes at the H&M Conscious Collection pop-up.