'You're gorgeous!' Lip kit ace Kylie tries on Caitlyn Jenner's new MAC gloss and it gets the teen's stamp of approval

Caitlyn Jenner's new MAC lipstick Finally Free has received daughter Kylie's highly coveted stamp of approval.

The 66-year-old made a guest appearance on Sunday on her teenager's Snapchat account, where Kylie tried the rosey new lip shade on for herself.

'So here's what it looks like,' the 18-year-old said, holding the lipstick close to the camera before swiping on an application to her bottom lip.

'You're gorgeous!' Caitlyn Jenner's new MAC lipstick Finally Free received daughter Kylie's highly coveted stamp of approval on Sunday

Caitlyn instantaneously approved of the shade on her daughter.

'Oh my God, you're gorgeous!' the reality star raved right as Kylie tried the product on.

Kylie giggled as she added, 'Instantly!'

The teen then swiped the lipstick onto her hand, holding the colour up into the light to study the dark pink and shimmering hue.

Giving it a go: Caitlyn made a guest appearance on her daughter's Snapchat account, where Kylie tried the rosey new lip shade on for herself

Check it out! Jenner showed off the rosey lip shade as her father watched over her shoulder

'Very pretty,' Kylie said. 'It's like a sheen, rosey colour.'

Caitlyn then yelled out of view from the camera, 'Remember! MAC.com!'

'Okay, shut up!' the teen jokingly told her father, a comment which drew laughter from both.

'Very pretty': The teen admired the shade after slicking it against her hand

Golden girl: Kylie also introduced three new shades of metal matte lipsticks on her Snapchat account that same day, which included one named after her nephew Reign

Kylie also introduced three new shades of metal matte lipsticks on her Snapchat account that same day, which included one named after her nephew, Reign.

The reality star swiped on the lip shades - also named King K and Heir - against her forearm to give fans a sneak peek of her latest batch of lipshades.

Caitlyn's lipstick, meanwhile, officially launched on Thursday and retails for $17; both she and MAC celebrated its arrival by unveiling the new ad on Instagram.

Come and get 'em! Jenner showed off the sleek packaging for her latest batch of lipsticks

In February, MAC revealed that '100 per cent of the selling price goes to the MAC AIDS Fund Transgender Initiative, to further its work in support of transgender communities'.

Because all of the proceeds are going to a worthy cause, Cailtyn, who was named the face of the face of MAC Cosmetics' Viva Glam line in February, admitted in an interview with MAC that she picked a shade that people can't get enough of.

'I wanted a lipstick that would be universal, suited to more people, and was an everyday lipstick, not just a high-glam, once-in-a-while kind of lipstick,' she explained. 'I like a little color on my lips, not a lot during the day.

Putting family first: The 18-year-old named a deep hue of bronze after her nephew, Reign

'Hair on the road!' Caitlyn gave the thumbs up as she got her hair washed in the tub by Courtney Nanson on Sunday

'And this rosy nude is the color I've gone to. To be honest, I want people to use it every day so they have to buy more. I want to raise a lot of money. It's very simple.'

Caitlyn announced the collaboration less than two months ago by sharing of herself modeling a slinky gold gown while posing alongside a glam squad.

'I'm finally free to announce my partnership with @MACcosmetics! All sales of our lipstick shade, Finally Free, go toward improving transgender communities [sic],' she captioned the image.