Candice Swanepoel shares the secret behind her perfect pert posterior as she does leg crunches in tight leggings

She is renown for her perfect pert posterior.

And Candice Swanepoel has shown just how she keeps her perfect derriere in Victoria’s Secret shape.

The model shared a picture of herself working out on her Twitter and Instagram accounts.

Buns of steel: Candice Swanepoel shared the secret behind her perfect pert posterior by posting a picture of herself doing leg crunches.

In the snap, the South African stunner is seen doing leg crunches in a pair of very tight workout leggings and a white sports bra, which also expertly shows off her supremely toned tummy.

Wearing ankle weights, Candice works up a sweat as she flexes her leg and bottom muscles.

She does the exercise in front of a mirror in what appears to be a private gym.

Impossibly pert: Candice is renown for her perfect pert posterior

Candice aptly hash tagged the snap ‘buns of steel’, thrilling her fans in the process.

Like her fellow Angels, Candice works out extremely hard to keep in tip top Victoria’s Secret shape.

Candice told FitSugar.com last year that her ‘ʙuтт workouts’ are the most important in her regime.

‘Butt for me is really important so [my trainer and I] always end with ʙuтт lifts on all fours,’ she said.

‘If I haven’t seen him in awhile the whole session is ʙuтт!’

The blonde beauty also regularly indulges in Yoga and Boxing.

‘[Yoga is] one of my new favorite ways; I just started doing more. It’s nice to just be able to stretch and work on your body but also your mind,’ she said.

‘Boxing has always worked really well for me as a full-body workout. I like something that’s fast; you really feel like you’re getting the energy up.’

Unlike many of the other VS model, including Adriana Lima, who have admitting in the past to fasting ahead of a shoot or show, Candice said she must eat to keep energised.

Pool party: The South African stunner attended a pH๏τocall in Los Angeles on Tuesday with fellow Angels Alessandra Ambrosio and Karlie Kloss to promote the line

‘I have to eat a lot because my metabolism is nuts, although I don’t know how long it’ll be like that!’ she said.

Recently Candice has been modelling and promoting the new Victoria’s Secret ‘Swim’ range around the clock.

The blonde beauty jetted out of Los Angeles on Wednesday after a promotional stop in Hollywood to reveal the retail chain’s latest swimwear.

She, along with fellow VS Angels Alessandra Ambrosio attended a myriad events to promote the new Victoria’s Secret Collection.

Legs eleven: Candice and Alessandra also appeared on Extra at The Grove

The group started their morning with an appearance on Good Morning America, and followed up a poolside pH๏τo call with an online Q&A session.

Their day also included an interview on Extra at The Grove and a meet and greet appearance for fans at the Beverly Center mall in Los Angeles.

They then topped it all off by attending the Victoria’s Secret 2013 Swim Party on Tuesday night in Beverly Hills.

At the event, Candice looked sultry in halterneck fitted dress, which sported a red-and-blue pattern on the front and a flare at the bottom.

The South African stunner wore point black heels and scraped her blonde hair back into a tight bun.