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Kate Middleton wore a beautiful, blue Issa dress when she and Prince William announced their engagement today, but it’s not the first time the soon-to-be-princess has relied on the London-based label. She wore a pink Issa dress in 2008 and a chic knee-length number to a friend’s wedding earlier this fall. Issa now has an exclusive bridal line with Net-a-Porter.com (pictured left), and we’re not going out on much of a limb to guess that the designer would probably be quite happy to whip up something extra special for the lucky lady. We can’t wait to find out—let the Royal Wedding Watch begin!

Prince William has presented fiancée Kate Middleton with the famed 18-carat sapphire ring that belonged to his late mother, Princess Diana. He explained his decision, saying, “It’s very special to me, Kate’s very special to me as well, I thought it only right to put the two together.” And showing how devoted he is to the memory of his mother, Prince William continued, “It’s my way of making sure my mother my mother didn’t miss out on today or the excitement of the fact we’re going to spend the rest of our lives together.” Watch the entire interview after the jump.

MORE! See other royal rocks.

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Burlesque premiered in Hollywood last night and we caught up with stars Christina Aguilera and Cher on the red carpet. Christina fessed up to being nervous on her first day of shooting, but said the Oscar-winning actress made it easy for her: “I didn’t know what to expect going into it and [Cher] really taught me the ropes, took me under her wing, and supported me throughout. I’ll always cherish that.” Find out what Cher had to say, plus watch a preview of Christina’s favorite performance after the jump!

—Andrea Simpson More