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Ashlee Simpson Wentz, Drew Barrymore, Kristin Cavallari

Gregg DeGuire/PictureGroup via AP IMAGES; Humberto Carreno/startraksphoto.com; Gustavo Munoz/Getty Images

Hollywood's leading ladies can't make up their minds: blonde or brunette?

So stars like Ashlee Simpson-Wentz, Drew Barrymore and Kristin Cavallari are going dark at the part and light on the bottom.

But it's not the best of both worlds—this ombré style is just one big multicolored mess that makes their normally lustrous locks look cheap and tacky.

Listen up, Ash, Drew and K.Cav: Stop spending at the salon for this slacker style ('cause we bet this streaky look still costs big bucks), and embrace your celebrity status with a well-colored head of hair.

This is one set of roots you want to weed out, stat!


See more of Joan Rivers' red carpet pet peeves Fridays @ 10:30 p.m. on E!'s Fashion Police!