Katie Cassidy Reveals Her Biggest Makeup Misstep

 Gilbert Carrasquillo/Getty Images; Jordan Strauss/WireImage.com

Any celebrity will tell you: there are as many style hits as there are misses when it comes to the red carpet. And Katie Cassidy is still living down a beauty misstep she committed two years ago.

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"I don't wear red lipstick often, but I went to this event for In Style a few years ago and I had a lot going on — a bright red lipstick and smoky eyes. And I wore this leopard-print outfit. I should have toned it down!" the Gossip Girl actress told Us Weekly at the Under Armour Spring 2012 Women's Event in NYC Wednesday.

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"But it was a couple of years ago, and I've learned my lesson!" she added, saying, "I learned that you have to keep your makeup really subtle if you're wearing a bright lip color. It's tough, but girls just need to be confident and trust that they're sexy and beautiful and can pull it off."

To avoid lipstick overload, the 25-year-old relied on Clinique Chubby Sticks ($15 each, clinique.com) for a pop of color on her pout. "They're amazing. They have really fun, juicy colors and I love that they're really moisturizing at the same time."

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The brunette beauty also opened up to Us about how she maintains her long and lean figure: tons of Vinyasa Flow yoga, running, kettlebell workouts and weight lifting. But to avoid style missteps at the gym, the right workout gear is pretty important to her.

"I literally cannot stand the armpit fat that you get when you wear a sports bra," she stressed to Us. "I'm always tucking it in! But right now I'm wearing Under Armour's new Armour Bra (available in 2012) and it's so comfortable. It's customized to how you're built so you don't get any of that when you're working out! I'm wearing their new workout pants too — they're amazing. The legging ones are great because you can just slip on a pair of boots. I'm heading straight to the airport right now and will fly in these."

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