Frankie Sandford wears bottom-skimming gladiator shorts as she films The Saturdays' new video

We’re used to seeing Frankie Sandford showing off her tanned legs in mini-skirts and shorts.

But when filming The Saturdays’ new video in Los Angeles yesterday, she managed to surpass her usual hemlines in a bottom-skimming shorts.

The 22-year-old WAG showed off her curvy behind in £80 green suede gladiator-style Topshop hotpants, which was teamed with a purple cropped top and military jacket.

Frankie Sandford wore tiny gladiator-style Topshop shorts, teamed up with a purple cropped top and military jacket as she filmed The Saturdays’ new video in Sun Valley

Clearly feeling the pain from wearing a pair of towering purple heels, she wore plasters on her ankles as she padded around barefoot.

No doubt feeling tired on the long shoot, the former S Club Juniors star kept her energy levels up with a packet of Cheetos.

Beside her bottom, the shorts also revealed her slightly dimpled thighs, suggesting she has succumbed to the dreaded cellulite like so many other women.

Irish singer Una Healy looked super sleek in her All Saints Aztec-print mini dress and towering gold and yellow heels

Also going for a very short hemline was her Irish bandmate Una Healy, who was wearing a multi-coloured All Saints mini-dress.

Toning in with Sandford’s cropped top was Rochelle Wiseman, who was wearing a hooded purple mini-dress, while Mollie King looked coloured in an orange and pink mini dress.

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But fifth bandmember Vanessa White’s ensemble was nowhere to be seen with crewmembers keeping her shielded from the wind under an umbrella.

Texting Marvin? Rochelle Wiseman looked glossy in a hooded purple dress with gold belt

Writing on Twitter, King enthused: ’It’s VIDEO TIME!!!!! Let’s shoot this bad boy!!!!’ before declaring 18 hours later: ’That’s a rap (sic) baby.’

White Tweeted: ’Video is going well and is a lot of fun! You guys are gonna love this one.’

While none of the group have revealed the name of their new song, it will be produced by Steve Mac - whose was responsible their 2010 hit Ego - and is due for release in May or June.

After all that time in hair and make-up, Mollie King’s hair is hit by the wind as an assistant tries to shield her from the weather

The track is written by Ina Wroldsen, who composed Up and Higher for The Saturdays, as well as The Pussycat Dolls’ Hush Hush and Pixie Lott’s Gravity.

Wiseman has promised fans the song is ’fierce’, adding: ’You guys are in for a treat.’

No doubt the five-piece are hoping this single will finally score them the No.1 which has eluded them for so long.

Since they launched their debut single in 2008, the group have failed to achieve a No.1 hit, with their highest being Forever Is Over at No.2 in October 2009.

The group walk on set together as they are photographed