Runs in the family! Gigi and Bella Hadid show off their toned abs and lean limbs as they celebrated friends' birthday in NYC 

They were quite the sister act on Thursday.

Displaying their fierce poses, toned abs, and lean limbs, Gigi, 20, and Bella Hadid, 18, showed just what makes them model material.

The saucy sisters joined forces to celebrate their BFF Cully Smoller's birthday at Italian restaurant, All'onda, in New York City.

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Saucy sisters: Gigi Hadid, left, and Bella Hadid, right, showed off their model figures while celebrating their BFF Cully Smoller's (middle) birthday in New York City on Thursday

Saucy sisters: Gigi Hadid, left, and Bella Hadid, right, showed off their model figures while celebrating their BFF Cully Smoller's (middle) birthday in New York City on Thursday

Lace up your look in Bella's saint Laurent heels

Oh to be one of the Hadid sisters.

Gigi and Bella are super beautiful, successful models and are part of the coolest clique with friends like Kendall Jenner, Cara Delevingne, Taylor Swift and Hailey Baldwin. Plus they're incredibly stylish and we pretty much want to own everything in their wardrobes.

Both girls were out last night in New York to celebrate a friend's birthday and both opted to show off their toned midriffs in cropped tops and high waist trousers. But it was Bella's heels that really caught our eye.

These lace up lovelies are by Saint Laurent and have a sexy, witchy vibe that's perfect for the coming months. Fancy stealing some Hadid style? Then click (right) to buy a pair now direct from the Saint Laurent online shop.

Or get the look for less with our edit below. Topshop, Missguided and Asos have all got great options that won't break the bank.

* PRICES MAY NOT BE AS ADVERTISED

'Happy birthday cully. Your sisters love you <3 @cullysmoller,' Bella wrote with a snap of the three.

Gigi was clad in a tight black short-sleeved crop top which she teamed with black high-waisted trousers and platform boots.

Her dark blonde locks were swept into a low relaxed 'do, as her face was fully made up with smoky eyes and nude pout.

Bella opted for a more revealing ensemble, wearing a black bralette with a pair of dark denim skinnies which were held up with a chic black and silver belt.

Strike a pose: The blonde beauty looked fierce while wearing a crop top and matching trousers and boots

Strike a pose: The blonde beauty looked fierce while wearing a crop top and matching trousers and boots

She maintained a bit of modesty by layering on an open black cardigan and teamed her pieces with sexy strappy black shoes that wrapped around her ankles.

The model wore her voluminous brunette tresses down and appeared to be wearing minimal make-up.

'Happy Birthday to my best friend in the whole wide world. There are not enough words to express how much you mean to me @cullysmoller @allondanyc,' Gigi added with a snap of just her and actor Cully.

Earlier in the day, the Sports Illustrated Swimsuit Issue stunner shared a steamy snap for her 'set life.'

'Set life': Gigi shared this Instagram snap earlier on Thursday

'Set life': Gigi shared this Instagram snap earlier on Thursday

Meanwhile, it's recently been rumoured that the daughters of Yolanda Foster are being lined up as the newest Victoria's Secret Angels.

Victoria's Secret confirmed to E! News earlier this week that Bella, signed to IMG Models, would be joining their PINK holiday campaign.

The fashion brand added 10 new names to its book at the start of this year, among them, Taylor Swift's BFF Martha Hunt, Miley Cyrus on/off girlfriend Stella Maxwell and 'the next Adriana Lima' Sara Sampaio.

Gigi has similarly had a breakthrough year in modelling, becoming the face of Topshop, Tom Ford and Guess.

She is also a face of VS' PINK collection.

Naughty and nice: Bella (centre) posed with Rachel Hilbert (right) and Devon Windsor (left) as she confirmed a new Victoria's Secret PINK campaign on Monday

Naughty and nice: Bella (centre) posed with Rachel Hilbert (right) and Devon Windsor (left) as she confirmed a new Victoria's Secret PINK campaign on Monday

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