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Celeste Barber is the new celebrity ambassador for budget cosmetics brand MCoBeauty last week.

Poking fun at Kylie's raunchy swimwear, the funnywoman hilariously wore her bikini top backwards - allowing the fabric to cut uncomfortably into her chest.

Celeste looked rather frustrated as she scrunched up her eyes and sprayed water on to her body.

She wrote in the caption: 'BREAKING - Using Jenner/Kardashian products will not make you look like one.'

Wearing her bikini top upside down to display even more cleavage, the reality star sprayed her body with the oil while maintaining a seductive stare at the camera.

Celeste uploaded a less-than-glamorous version of Kylie's clip, swapping the body oil for a plastic gardening spray bottle.

It comes just days after Celeste was announced as the new face of vegan beauty brand MCoBeauty.

The brand is known for its range of affordably priced imitations of high-end products, including the $45 Kevyn Aucoin mascara and Tarte Cosmetics' $42 Shape Tape Concealer.

'Honestly, I'm the last person who should be giving beauty advice, so I won't,' Celeste said on Instagram last week.

'All I'll say is I'm absolutely obsessed with the products. The XtendLash tubular mascara is the best I've ever tried.'