Rosie Huntington-Whiteley looked incredible wearing a Sєxy swimsuit on Instagram on Wednesday.

The supermodel, 37, slipped into the black one-piece which had a V-shaped cut-out at the cleavage and a white trim at the top and on the straps.

She reclined on a low lounger while posing in a spa, showing off her lithe legs in the process nad running her fingers through her long honey blonde hair.

Sitting up in some of the images, she also lay down for a moment as she gazed out into the distance wearing the £185 ensemble from Monday Swimwear.

The Clovelly swimsuit from the label comes in eight different colourways and Rosie opted for the black/ivory version.

She wrote in the comments: ‘Obsessed with this one piece #AD.’

The posts come just days after Rosie celebrated her birthday last week and on Friday, she shared some glam pictures of herself wearing a pink dress.

She was snapped blowing a candle on top of a stunning three-layer cake made by @thepinkcooker as she was surrounded by her loved ones.

‘But he wanna lick the icing off… #37,’ she captioned her sizzling carousel.

The catwalk favourite rocked a set of glamorous gold jewellery from Tiffany&Co, including cuff bracelets and high tide earrings.

Rosie was spotted looking all partied out her boozy birthday celebrations in London that evening.

The model was spotted leaving Lou Lou’s private members club with pals, followed by a trip to the Chiltern Firehouse.

Rosie showed off her incredible figure in her sheer pink midi dress, which had a drink stain on it, with a leotard underneath.

She boosted her height in lace-up heels and carried her belongings in a small white shoulder bag.

Rosie stayed at the venue until 4am, when she was escorted to her car by her driver.