09/01/2011 02:04 pm ET Updated Dec 06, 2017

Rachel Zoe: Style Evolution (PHOTOS)

Rachel Zoe is a fashion force to reckoned with -- the highly coveted stylist (who turns 40 years old today) is a front row fixture every season during Fashion Week, and rightfully so. With a rolodex of clients that includes Anne Hathaway, Jennifer Garner and Kate Hudson, Zoe is Hollywood's go-to gal for the best red carpet looks.

But since Zoe first started dressing Hollywood, the blonde babe has remained loyal to key pieces in her wardrobe: fur vests are ah-mazing when paired with printed maxi dresses, and over-the-knee boots are a must-have when running between fashion shows.

With Fashion Week around the corner, we can't wait to see what Zoe, along with baby Skyler, will wear while perched in the front row.

In celebration of her 40th birthday, take a look at Zoe's personal style over the years: