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Even with less than two weeks until her nuptials to Jared Kushner, real estate mogul/jewelry designer Ivanka Trump still has social networking on the brain. She’s tweeting away exciting details about her Big Day (Regis Philbin is attending!) and we want to help her celebrate. At noon today, check out our Twitter page for a special message. Be the first person to re-Tweet it and you’ll take home one of these gorgeous stackable rings by Ivanka Trump Fine Jewelry. “I have given these as birthday presents,” said Trump. “They are simple and beautiful.” If you don’t win today, check back Thursday and Friday at noon EST for two more chances to win!

Stackable Rings, Ivanka Trump Fine Jewelry, $650 each; call 212-756-9912.

UPDATE! Congratulations to our three winners @mineola, @kelliechio and @KateSpencer1. Stay tuned to our Twitter page for more exclusive giveaways!

To celebrate the 15th Anniversary of NARS François Nars, the founder and creative genius behind the brand, is releasing a limited edition book of fifteen celebrity portraits—NARS 15X15. And as if you needed more proof of his brilliance, get this—he took each photo, too! Each star shot is inspired by an iconic NARS product: Marc Jacobs (top left) chose Dovima Nail Polish; Amber Valetta (top right) chose Belle de Jour lipstick; Jennifer Jason Leigh (bottom left) chose Black Moon Eyeliner Pencil; Shalom Harlom (bottom right) chose Jolie Poupe Duo Eyeshadow. Only 1,500 copies of the $80 book will be sold at www.15X15project.com.

Mary-Kate and Ashley Olsen, the design duo behind trendsetting labels Elizabeth and James and The Row, are lending their cool-factor to another must-have accessory—sunglasses. Next spring they will launch an eyewear collection under their more luxurious brand, The Row, partnering with Linda Farrow Eyewear on four distinct styles. “We tried to find certain pieces that look good on more than one face,” Ashley Olsen told WWD. The shades will be priced $325 to $390 and will be available alongside The Row’s perfect T-shirts and leggings at Barneys New York and Bergdorf Goodman.