November 04, 2015 11:15 AM

What’s Lennon and Maisy Stella‘s favorite tradition on country music’s biggest night? Getting gorgeous, of course.

The sisters – who got their start on YouTube after their rendition of Ingrid Michaelson’s “You and I” went viral and who now star as Maddie and Daphne Conrad on ABC’s Nashville – told PEOPLE at Music City’s Second Harvest Fashion Show that they’re excited to start “glamming it up” for this year’s CMA Awards. Says Maisy, 11, “That’s definitely the most fun!”

While the two love getting their hair and makeup done, 16-year-old Lennon keeps it real with her jewelry selection for the evening. “I got it on Etsy,” she says of the body chain she wore over a black Bloomingdale’s flower collar ponte dress at this weekend’s event. “It was a solid three dollars.”

Despite their quick rise to fame, Lennon admits that she still gets starstruck, including having the ultimate fan girl moment when she met Stevie Nicks: “I didn’t even know what to say! It was the craziest experience of my life!”

RELATED VIDEO: Meet Nashville‘s Cutest Cast Members!

The 2015 CMAs air Wednesday at 8 p.m. ET, and Nashville returns Nov. 11 at 10 p.m. ET, both on ABC

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