When Kate Middleton, now officially Catherine Duchess of Cambridge, stepped out of her carriage to debut her wedding dress to the world this morning, everyone from fashion appreciators to couture designers gasped. For years, strapless gowns have been the norm, for prom queens and brides alike. But Catherine walked down the aisle with long, elegant lace sleeves that combine traditional fashion (covering of shoulders in a church) with modern elements (a plunging neckline and a fitted bodice). Her dress was designed by Sarah Burton at Alexander McQueen.

Now, the inevitable copycat dresses are going to hit the racks. What do you think- are long sleeved prom dresses going to be in for next year? Would you wear a long sleeve formal dress? And, do you think Nicole Richie, who wore a stunning long-sleeved wedding dress for her nuptials to Joel Madden, is thinking, "I did it first! Back in December!" Tell me in the comments!

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Major sale alert! Betsey Johnson is offering an additional 40% off already reduced dresses and accessories. That means you could save a whopping 70% on a Betsey dress. My favorite sale dresses right now are the Evening Violet Pop Corset Dress, the Evening Queen Bee Strapless Dress and the Misty Rose Burnout Baby Doll Dress. What are yours?

Red lips are all over the red carpet. Everyone from blonde and fair Taylor Swift to olive Selena Gomez has been seen with a bold pout. No matter what your coloring, you can rock shades of red for any formal dance. Just follow these simple rules for how to wear red lipstick with a formal dress, then check out how to perfect a red pout.

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Are you a little more preppy while your crush is a little more punk? Or perhaps you're a sporty surfer girl who loathes the indoors, while your date would rather spend his days holed up playing video games. I can't explain why opposites attract... they just do. And it doesn't just apply to personalities. Have you seen these gorgeous black and white prom dresses?

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