RaeLynn Reveals Blake Shelton and Miranda Lambert's Marriage Advice

The 21-year-old spills to ET all about her upcoming 'winter, whimsical' themed wedding!

Blake Shelton and Miranda Lambert have some words of wisdom for RaeLynn!

The 21-year-old, who competed as part of Team Blake on season two of The Voice, has remained close with both Shelton and Lambert following their summer split. RaeLynn has been on the road touring with Lambert, and on Wednesday, she paid tribute to Shelton with a performance of "Neon Light" at the CMT Artists of the Year Awards in Nashville. (If you missed the show, catch it again this weekend on CMT!)

"He's been my biggest advocate since I was 17 years old," she gushed to ET about Shelton on the red carpet. "He's my biggest fan other than my family and it's such an honor to be able to show that he is one of the best country music artists -- and the best person you'll ever meet. He's completely changed my life just because of his love for me."

NEWS: RaeLynn Is Engaged! See Her Gorgeous Ring

Shelton and Lambert have each contributed to the "God Made Girls" singer's post-Voice career success. When RaeLynn became engaged to Josh Davis in October of this year, her recently divorced mentors had some words of advice.

"I talk to both of them. You know, they're grown-ups. You handle things," she said of her relationship with the former couple. "[They said] 'It's all about when you find the right person, you gotta kinda go with it.' They've both been so supportive."

For her part, RaeLynn is fully supportive of Shelton's new romance with Gwen Stefani. See what she said about the couple in the video above!

WATCH: RaeLynn Shakes Off Anti-Feminist Criticism of 'God Made Girls'

RaeLynn couldn't help but spill a few details about her upcoming nuptials, which are set for Feb. 27 in Nashville. ("Why wait?" she teased with a smile.)

"It's crazy! I didn't think I needed a planner, but now I need a planner because it's been so nuts," she said of the whirlwind planning process. "I finally got my colors picked out. I got my wedding dress picked out! It's gonna be a very winter, whimsical-looking theme."

And by the sound of it, RaeLynn's dress will be a stunner.

"It's very me," she said. "It's a big dress, it's not like mermaid fit. I didn't really want sleeveless, so I did more of a sleeve thing. It's just so beautiful! The back's my favorite."

WATCH: RaeLynn Dishes on New Single 'For a Boy' and the Date That Inspired It

We can't wait to see her as a beautiful bride! In the meantime, watch RaeLynn adorably dish on the inspiration for her single, "For a Boy," in the video below.

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