Kourtney Kardashian declares she's three years sober

Kourtney Kardashian is proving she can still be the life of the party with a mocktail.

The mom-of-four shared that she’s three years sober in a video posted to her Instagram Stories on Friday, January 16.

Kardashian, 46, revealed her big achievement while celebrating the launch of sister Khloe’s latest Khloud popcorn flavor.

'@Khloudfoods @KhloeKardashian def told them I haven’t drank alcohol in 3 years,' she wrote over the post. 'Fancy Friday.'

The clip showed the Poosh founder - who stopped doing Botox for a bizarre reason - getting the VIP treatment from a white-gloved server who poured a portion of Khloud’s new truffle white cheddar popcorn in a large martini glass.

The server boasted the snack was made with 'all natural ingredients, no seed oils, gluten free' and has 'seven grams of protein so you can snack guilt-free' as Kourtney reached a manicured hand to try a sample.

'Love it!' she exclaimed.

Next Kardashian was handed a mocktail mixed with non-alcoholic gin and garnished with two pieces of Khloud popcorn.

'Cheers!' toasted the reality star, who shares son Rocky, 2, with husband Travis Barker and kids Mason, 16, Penelope, 13, and Reign, 11, with ex-fiancé Scott Disick, who has made great strides towards his own sobriety.

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Kardashian certainly imbibed during her younger years but her focus on health, her recent pregnancy and her desire to be present for her kids have caused her to nip drinking in the bud.

Her abstinence from alcohol coincides with the fact that Barker has been sober for more than 17 years.

The Blink-182 drummer stopped drinking and using marijuana and other drugs after a life-changing plane crash in 2008 which left him with third-degree burns over 55 percent of his body that required 27 surgeries.

Kardashian’s milestone celebration comes days after she was seen picking up take-out without a stitch of makeup on her face on Monday, January 12.

While her sisters Kim, Khloe, Kendall and Kylie would probably rather die than be seen without their foundation and mascara on, the eldest sibling doesn’t have a problem going au naturale sometimes.

That’s not all Kardashian is giving up. During the December 18 episode of The Kardashians, she claimed she hadn't received any Botox injections in four years and planned to 'never' turn to the wrinkle-erasing substance again.

Kardashian gave up Botox not out of a desire to age naturally, but to keep her ‘third eye open’ and aid her ‘intuition.’

‘Why are you looking at me when you say this?' Kim asked after her sister announced that she was now Botox-free.

Kardashian repeated: 'I’ll never get it again.’