Birthday girl Leigh-Anne Pinnock takes the plunge in a sexy white catsuit before slipping into a bootie-skimming black leather playsuit for night out with Little Mix bandmates

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She marked her 25th birthday in the company of her family on Tuesday.

And Leigh-Anne Pinnock was turning up the heat when she joined her Little Mix bandmates on Saturday for a glamorous night on the town, celebrating the special occasion as a group at The Stirling in central London.

The striking singer ensured she was the centre of attention by going braless in a sexy white catsuit with lace-up detailing running down the front, before slipping into a racy leather black romper.

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Birthday girl: Leigh-Anne Pinnock was turning up the heat when she joined her Little Mix bandmates on Saturday for a glamorous night at The Stirling in central London to celebrate her 25th birthday

Leigh-Anne went braless under the slinky white number, which clung to her toned figure.

The birthday girl accesssorised with strappy white heels and a black leather handbag, wearing her dark tresses in a seductive tousled style.

 Later in the night she slipped into a thigh-skimming racy playsuit, which skimmed the top of her thighs and rear, showing off her toned legs and pert posterior.  

Outfit number 1: She went braless in a sexy white catsuit with lace-up detailing running down the front

Changing it up: The striking singer ensured she was the centre of attention in white , before slipping into a racy leather black romper

The leather halterneck number featured a number of dominatrix-style long tassels, which also featured to the back of the piece, which partially covered the low-cut back.

Adding to the racy display she teamed the number- which featured semi-sheer panels across her tiny midriff- with a pair of over the knee lace up Louboutin skyscraper boots. 

Keeping her hair and make-up the same, the birthday girl put on a risqué display for the cameras. 

Bright white: The jumpsuit showed off her tiny waist and perfectly proportioned hips

Standing out: The girls put on a glamorous display as they posed for pictures

Fabulous! Getting all their angles right the girls posed up a storm

Dominatrix-esque! The birthday girl teamed the romper with a pair of over-the-knee lace up boots

Glamorous: The Black Magic hitmaker went hand-in-hand with her bandmate Jesy Nelson, who looked incredible in a bodycon brown leather number

Girl power: Also joining the duo was Perrie Edwards, who was rocking a seductive black leather number, but there was no sign of fourth member Jade Thirlwall

The Black Magic hitmaker went hand-in-hand with her bandmate Jesy Nelson, who looked incredible in a bodycon brown leather number. 

The low-cut dress highlighted her voluptuous cleavage in the fashionable number, which she paired with black suede heels.

The stunning singer wore her thick brunette locks in flowing curls and upped the glamour with a nude lip and plenty of bronzer.

Also joining the duo was Perrie Edwards, who was rocking a seductive black leather number.

Dressed to impress: Leigh-Anne went braless under the slinky number, which clung to her toned figure

 Vamp chic: Perrie looked like she was ready to rock in a seductive leather number with a red silk lining and a very high side split 

The daring dress featured a very high side split, offering a glimpse of her long legs as she powered along.

There was no sign of fourth band member Jade Thirlwall, no doubt joining the girls later on in the evening.

The X Factor formed four-piece been spending some quiet time after a busy few months on the road.

Discussing their upcoming fourth album, Jade recently told MailOnline: 'It's moving a lot faster than any of the other albums have done, because we want to release it before Christmas, which means we have to have the first single ready pretty soon.'

Girls' night out: The X Factor formed four-piece been spending some quiet time after a busy few months on the road

Leaving in style: Perrie carried a Louis Vuitton holdall as she left the venue

Star studded: Fleur East was also spotted at the birthday bash