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It turns out stars are just like us — at least when it comes to discovering viral beauty products online.

Reneé Rapp shared her three-product lip combo with Allure last year and one item in particular stood out to viewers, as the BITE ME singer and Mean Girls actress touted the wonders of a $10 Amazon lip stain.

“My most asked beauty question is ‘what is your lip combo?'” Rapp bashfully said in the video. “I’ve been holding out on you b—hes … I’m not gonna lie because I don’t want to not be able to get this s–t.”

Palladio Lip Stain in Mocha Cream

$9.59 Buy Now On Amazon

Fortunately, Rapp’s go-to lip stain is widely available on Amazon right now. The singer revealed that she starts her lip routine with Palladio’s Lip Stain in the shade “Mocha Cream.”

The hydrating lip stain currently retails for $9.59 on Amazon and comes in a mini marker-style package. “This is literally the best thing ever,” Rapp praised. “Hell yeah, I saw it on TikTok and hell yeah I bought, like, 20, and I’m never letting it go,” she said.

The Palladio Lip Stain currently boasts more than 10,000 reviews online on Amazon. And hundreds of TikTok videos have been created about the lip stain, with users praising its highly-pigmented color and stay-proof, water-resistant finish. The lip stain comes in six shades which you can see here. It’s formulated with panthenol, a humectant that retains moisture to help keep the lips hydrated.

At just $10, it’s a no-brainer to pick up on Amazon. As for Rapp? The star uses the stain to line her lips, blending out the harsh edges with a brush with residual concealer on it.

Artist Color Pencil Lip Liner in Wherever Walnut

$26 Buy Now at sephora

Rapp follows up her lip stain with this rosy brown lip liner from Makeup for Ever.

Rapp uses the Waterproof Artist Color Pencil in the shade Wherever Walnut. The lip pencil can be found at Sephora for $26. Rapp applied the warm, rosy nude shade over the lip line she just made with the stain, further defining it. The singer also warned not to take the liner into the middle of your lips. “‘Cause when it looks lighter, I feel like it looks better,” Rapp added.

What we like: the waxy waterproof formula offers maximum color payoff without budging.

L'Oreal Paris Plump Ambition Oil in Wine O'clock

$9.99 $13.99 29% off Buy Now On Amazon

Finally, Rapp topped her lip look off with the L’Oreal Paris Plump Ambition Lip Oil in the shade Wine O’clock, a deep red wine color (hence the name).

The oil is currently on sale for under $10 on Amazon. The Broadway star patted the oil in the center of her bottom lip, then smacked her lips together, dispersing the dab of product she’d applied. The oil, like her lip stain, is formulated with hyaluronic acid, which hydrates the lips. You’ve also got tripeptides that stimulate collagen production, creating that plumping effect.

Rapp new album Bite Me was released Aug. 1 and debuted at number-one on the UK charts.