Alessandra Ambrosio giggles in delight during the behind-the-scenes photo shoot for the Victoria's Secret Fantasy Bra.

Brazilian supermodel Alessandra Ambrosio has been picked to wear the famous diamond studded Fantasy Bra for the upcoming Victoria's Secret Fashion Show coming this December. The new mom, can't hide her excitement at the video footages that was shared on the Victoria's Secret account on YouTube.

"I've been waiting to wear this bra for like, 11 years," she gushed before the video bursted into the song "Diamonds Are a Girl's Best Friend."

"It's such an honor, I've been working with Victoria's Secret for years, and this is the first time they chose, me!" Alessandra happily said. "It's such a big deal, I shoot the bra for the catalog, and will wear it on the runway for the 2012 Victoria's Secret show."

Alessandra who just gave birth to her second baby last May looks more than ecstatic to be wearing the $2.5 million Fantasy Bra for this year. Designed by New Jersey based, London Jewelers, the bra boasts 5,200 precious stones with a 20 carat diamond centerpiece.

"It's such an honor, I've been working with Victoria's Secret for years, and this is the first time they chose, me!" she squealed.

The beautiful model said that it was late May when she received the good news that she's been chosen to wear the Fantasy Bra. She admitted that she was nervous and was pressured to get back into shape quick.

But all the exercise and diet certainly did pay off. Alessandra looked smoldering during the photoshoot for the Victoria's Secret Floral Fantasy Bra.

The Victoria's Secret Fashion Show will air on December 4 on CBS. Justin Bieber, Rihanna and Bruno Mars are expected to share the runway with the Angels.

(All images lifted from YouTube)

Also read:

Alessandra Ambrosio to Model $2.5 Million Victoria's Secret Fantasy Bra [PHOTOS]

Who is the Sexiest of Them All? Victoria's Secret Angels Get Ready for Annual Show [PHOTOS]