Hollywood Reporter Names 25 Most Powerful Stylists List

British stylist Coulter studied at Central St. Martins and launched her own menswear line, AKA (now defunct), right out of school. She came to Los Angeles on a whim about 10 years ago and ended up styling a photo shoot for Flaunt magazine with Orlando Bloom (she was friends with him in London before he became famous).

PHOTOS: Behind the Scenes at THR's 25 Most Powerful Stylists Photoshoot

Now fashion girls Bosworth, Miller and Huntington-Whiteley look to Coulter to rock their red-carpet style. Says Huntington-Whiteley: “I was looking for a stylist to help with my Transformers press tour last summer, and I asked my publicist, ‘Who styles Kate Bosworth?’ because I’ve always admired her style.”

The model-turned-actress was at first put off by Coulter’s first name (“Sooo L.A. sounding!”), but after the stylist made a house call, the Brits hit it off. “It was like … she’s English, she’s hired,” jokes Huntington-Whiteley. Coulter describes the Transformers actress’ red-carpet style as “straight-up cool, classic and sexy.”

PHOTOS: Best Awards Season Looks by THR's 25 Most Powerful Stylists of 2012

A few of their stellar moments include a shimmery va-va-voom red Antonio Berardi dress at the film’s New York premiere (“It ended up being a bit of a Jessica Rabbit moment,” says Huntington-Whiteley) and another red Berardi, this one a knockout cap-sleeve fitted column, at the post-Oscar Vanity Fair party.

Coulter also co-designs, with Bosworth, a jewelry collection for online style site JewelMint. For breakout indie actress Olsen, Coulter put together chic, young Chanel, Chloe and Balmain looks during awards season and dressed her in a sunshine-yellow, graphically beaded long-sleeve minidress by Emilio Pucci at the Critics’ Choice Awards.

“A great awards-season dress is one that you look back at 10 years later and think it’s a ‘wow’ dress,” says Coulter. “It stands the test of time.”