Chosen as this year's model for the annual Fantasy bra, Kerr has been hitting the exercise circuit pretty hard.

The new mother is reported to be determined to get her "booty up" before the celebrated annual Victoria's Secret fashion show. Giving birth this Jan. to her first child, Flynn, the model admits to working out fiercely to get in shape.

"I do yoga. That's something I consistently do as well as Pilates. So I've been doing that for the past six months. But I've been doing more squats because you gotta get that booty up - you really can't hide anything when you're up there on that runway - you've got cameras coming at you from every angle," Kerr reportedly said to fashionista.com.

While she is adamant about not being nervous about stripping down to her underwear, she feels that donning the bra is such a high honor to live up to.

The sultry mannequin also took time to excitedly talk about being a parent. She marveled at how well her husband, Orlando Bloom, has taken to fatherhood.

"[Orlando is] the best father, I'm really lucky. He wants to do everything. He changes the diapers, we have family bath time. It's really nice," Kerr has been quoted saying in the New York Post's Page Six.

The aforementioned bra is dubbed the Fantasy Treasure Bra and was created in Long Island by the company, London Jewellers. Aquamarine in color, the one of a kind push-up bra is beset by pearls and citrine stones, all of which are set in gold.

Featuring 3,400 stones with 142 carats of alternating white and yellow diamonds; the focal point of the illustrious garment are two 8 carat white diamonds as well as two yellow diamonds that are valued for over 13 carats. Appraised at $US 2.5 million, this is one bra to rival the delicate aesthetics of Kerr.