Miranda Kerr working out for show

Miranda Kerr has been working out for the past six months to get in shape for the upcoming Victoria's Secret Fashion show.

The stunning model - who gave birth to son Flynn in January - admits she's been exercising hard so she is in her best shape for the prestigious annual show, which takes place next month.

Miranda - has been chosen to wear this year's $2.5 million 'Fantasy Bra' - told fashionista.com: "This is something I've always wanted to do. 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."

The bra has 3,400 gems hand-stitched into the it and took more than 500 hours to make. The piece of lingerie contains diamonds, pearls, citrines and aquamarines and a tassel centrepiece comprised of two 8-carat white diamonds and two yellow 14-carat diamonds.

The 28-year-old beauty said after being chosen: "It's such an honour to wear the bra! And it's such a piece of artwork! It's absolutely stunning - it kind of feels a little mermaid-like - but I can't believe I'm wearing $2.5 million on my chest."