Selena Gomez Offers Behind-the-Scenes Sneak Peek of Her 'SNL' Glam While in Rehearsals

Selena Gomez is getting ready to take over Studio 8H!

The "Ice Cream" singer, 29, posted a short clip to her Instagram Story Thursday showing off her freshly manicured nails, makeup and chic ensemble while in rehearsals for Saturday Night Live.

The video was also shared by celebrity manicurist Tom Bachik, who wrote in the caption, "SNL Rehearsals @selenagomez 🤭💅 #nailsbytombachik."

Gomez announced last week that she would making her SNL hosting debut this Saturday, writing on Instagram, "Mom…I think I've made it 😭 so grateful and so excited. See you May 14!!!"

Post Malone — who told PEOPLE this month that he and his girlfriend are expecting their first child — will serve as the evening's musical guest.

Earlier this week, Camilla Cabello talked to PEOPLE about her friendship with Gomez, revealing that the Only Murders in the Building star "is somebody that's always been so supportive, a really great friend, and a person with great values."

Cabello added, "She's super empathetic, loyal, and honest. We have our own little group, and we hang out, and all of our conversations are real."

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"I feel like she's never pretending, and I don't feel like I have to pretend around her. Those are the most worthwhile friendships," continued Cabello, who's inspired by Gomez's authentic approach to celebrity. "Women like her being so vulnerable and honest with their feelings is such a guiding light for me, and I think it's going to alleviate a lot of people coming after her, after me, in the industry, that feel like they have to be perfect."