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Katherine Heigl worked a glamorous half-moon manicure in a deep wine hue at the New York premiere of her new film One for the Money last night. The retro-inspired style may seem challenging, but you can create the look at home with two of your favorite nail polish shades, using a few French manicure tip stickers to keep your lines neat. No time to watch paint dry? Grab a set of Dita Von Teese’s half-moon press-ons! The burlesque star designed a glue-on nail kit for Kiss nails ($10 at dita.net), which looks very similar to Heigl’s half-moon mani.

Plus, see more of our favorite celebrity nail polish picks in the gallery!

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InStyle teamed up with Shopkick, the largest location-based shopping app, to make shopping for your shape easier than ever! Visit the free app on your phone to find out where to buy the editor-selected, figure-flattering pieces featured in InStyle’s February issue, and get exclusive, super helpful styling tips about how to wear them. Plus, use the app to score amazing deals. Here’s how it works: You get “kicks” every time you go in a store, the more kicks you get, the more rewards and discounts you earn! (Example: Collect over 1,250 kicks, you can score a $25 gift card to Target or Macy’s.) Get started by downloading the app now—it’s FREE for your Android or iPhone—and check back for our newest Shopkick pop-up store next month.

• SHOPKICK FOR iPHONES
• SHOPKICK FOR ANDROIDS

Last night, Michelle Obama attended President Obama’s annual State of the Union address in Washington, D.C. wearing a sapphire blue dress by Barbara Tfank accessorized with an Alexis Bittar brooch. Today, we caught up with the Los Angeles clothing designer, inset, who told us she customized the look from one of her resort 2012 collection pieces just for the First Lady. ”It is a great honor and pleasure to assist The First Lady,” she told InStyle.com exclusively. Tfank last dressed Obama to meet Queen Elizabeth and Catherine, Duchess of Cambridge at Buckingham Palace in May 2011. For more of our favorite Michelle looks, click through the gallery.

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• Transformation: Michelle Obama
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