You've heard the news...read more about it and see the pics! BRITNEY in VEGAS!

Whether walking through Sugar Factory's www.sugarfactory.com bustling retail shop, sitting side-by-side over dinner with friends at Sugar Factory American Brasserie or in their luxurious private section at Chateau Nightclub & Gardens (www.chateaunightclublv.com), Britney Spears and Jason Trawick were hand-in-hand as they celebrated their engagement and Trawick's 40th birthday this past week-end.

Spears, glowing in the wake of her engagement, wore a skin-tight blush-colored dress showcasing her hourglass frame. Trawick, dressed for the occasion in a stylish grey suit with a vest, looked adoringly at his soon-to-be bride throughout the evening.

Her engagement ring, a befitting bauble for the gorgeous pop princess, shone brightly from her left hand. The stunning round-cut engagement ring from Neil Lane was impossible to miss. 

Spears and Trawick canoodled and laughed with each other in a secluded corner of Sugar Factory's luxurious Chocolate Lounge, joined by their friends and family, reveling in the brand new chapter of their lives together. The blonde bride-to-be couldn't keep her eyes off of her brand new sparkler, as she put her hand out in front of her and gave her man kisses throughout the meal.

The group started the meal with a toast to the lovely couple. For dinner, the lovebirds shared Sugar Factory American Brasserie's salmon and array of pizza, including the popular chocolate pizza. Dining in the Chocolate Lounge wouldn't have been complete without a decadent dessert and Sugar Factory pulled out all the stops for the darling duo. Spears and Trawick playfully enjoyed sharing treats dipped in an oversized chocolate fountain, the centerpiece of an elaborate dessert display of cupcakes, gumdrops and other indulgences. 

As a special birthday treat for her beau, Spears walked with Trawick through Sugar Factory's retail after dinner, picking out sweet treats for each other and goodies for the boys that included the too-cute boys' T-shirts for Sean and Jayden. Spears loved the store's apparel, as she picked out for herself the "I Want Candy" tunics and tanks, Sugar Factory signature jeans and couture pops. The sweethearts also made sure to snag sweets like M&Ms, Reese's Peanut Butter Cups, Hershey's Kisses and Blow Pops.

Surrounded by a group of 30, Trawick and Spears went upstairs to Chateau after dinner, where thousands of fans cheered and shouted congratulations for Spears and Trawick when they entered the club. Spears and Trawick happily chatted with friends and greeted fans in the club, occasionally sneaking away to enjoy some private time together.

Still, Spears had a special surprise for her man. As the LED flashed "Happy Birthday Jason," Spears presented her new fiance with a two-tier black and white birthday cake with "Happy Birthday Jason" displayed across the decadent red velvet cake, Trawick's favorite.

Trawick and Spears clearly enjoyed their escape together, laughing and smiling with each other and friends as the newly engaged couple were seen dancing up a storm late into the night at the stylish club.

Chateau will host the most elaborate New Year's Eve bashes on the Las Vegas Strip, with a performance by Good Charlotte and special guest Mike "The Situation" Sorrentino on Friday, Dec. 30, and Scott Disick and Kourtney Kardashian ringing in the New Year with DJs Joel and Benji Madden on Saturday, Dec. 31.

Chateau Nightclub & Gardens is a luxurious nightclub, terrace and lush rooftop nightclub at Paris Las Vegas. The new Chateau Gardens,  situated on the rooftop of Paris Las Vegas under the awning of the Eiffel Tower, celebrated its grand opening last weekend. Reminiscent of a lush garden in Versailles, Chateau Gardens spans 22,000 square feet in an unparalleled setting beneath the stars.  Butterfly, held every Saturday night at Chateau Gardens, is an ultra-sensory nightlife experience that combines the talents of the world’s top DJs, producers, singers and performance artists.

For more information or table reservations, guests may visit the website at www.ChateauNightclublv.com, call 702.776.7777, follow Chateau on Twitter @chateaunightclublv or become a fan on Facebook at www.Facebook.com/ChateauNightclub.

The Sugar Factory brand has become an instant hit across the country –offering everyone a sweet escape. Sugar Factory currently has stores located at The Mirage Resort and Casino, and Miracle Mile Shops inside Planet Hollywood Resort & Casino. Sugar Factory’s flagship location and biggest store can be found at Paris Las Vegas. For more information please visit www.SugarFactory.com , follow on Twitter at @SugarFactory and friend on Facebook at facebook.sugarfactory.com.

PHOTO CREDIT: Denise Truscello/WireImage