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Have you found your Halloween costume yet? For inspiration, we’ve rounded up a list of celebrities that would be easy to dress up as for the over-the-top holiday, from the decked-out Kardashian clan to the chic Rachel Zoe. Check out celebrity (and couple) costume ideas in the gallery, plus tips for scoring their signature looks!

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• What Celebrities Wore Last Year!
• Halloween Costume Ideas: Movies and TV

The Kardashians announced plans to launch a nail polish collection with Nicole by OPI earlier this year, and images of the 14-piece collection are finally here! Khloe and Kourtney (left) launched the polishes—dubbed the Kardashian Kolors—in New York City yesterday. The shades relate to every girl in the family, from All Kendall-ed Up, a hot pink, to Sealed with a Kris, a glossy fire engine red and Kim-pletely in Love (inset). The polishes will retail for $8 each, and will be available this holiday season. Click “See the Photos” to preview the entire collection, then tell us—which shade will you try first?

Kourtney, Khloe and Kim Kardashian just announced that they will launch a lower-priced label named Kardashian Kollection exclusively at Sears stores in August. The new line will include clothing, lingerie, handbags, wallets, shoes and accessories. This is the latest venture in the long list of the Kardashian sisters’ enterprising projects. Others projects in the Kardashians burgeoning empire include:

• Kardashians by Bebe;
• QVC K-Dash line;
• Fitness DVDs;
• 3 Dash boutiques;
• Reality TV shows (of course);
• Kim’s solo projects: Skechers and Lip Fusion ad campaigns; Perfume; Founder of ShoeDazzle.com; Belle Noel jewelry;
• And now, Sears.

We’re pretty sure this list is only going to get longer! What do you think the Kardashian sisters should do next?