EXCLUSIVE: Julianne Hough Says It Was Love at 'First Sight' With Brooks Laich, Shares Her Wedding Must-Haves

The dancer reveals she instantly fell head over heels for the hockey stud.

Julianne Hough is opening up about the moment she met her fiancé, Brooks Laich, confessing that she never expected to be the kind of person to fall in love at first sight.

EXCLUSIVE: Julianne Hough Says Wedding to Brooks Laich is ‘Coming Up,’ Spills on Bachelorette Party

“I never thought I was one of those people, but when you know, you know,” the Dancing With the Stars judge tells ET’s Lauren Zima while promoting the #thanksteach campaign, which helps teachers buy much-needed school supplies. “When we saw each other for the first time, it was like, ‘And, we're done.’”

“[It was] first sight,” the 28-year-old dancer adds. “It was crazy. We had been talking for a while, but we hadn't met.”

The Canadian hockey hunk popped the question in 2015 and Hough recently celebrated her bachelorette party in Cabo San Lucas, Mexico.

WATCH: Derek and Julianne Hough Preview ‘Move – Beyond’ Tour

As she continues planning her big day, Hough dishes on her three most important wedding essentials.

“Best dance floor ever!” she says with a laugh. “Best music! And [dogs] Lexi and Harley have to be a part of it. The little dogs, doing something!”

Thanks to her current Move – Beyond - Live on Tour with big brother Derek Hough being “super-athletic,” Hough is already in fabulous shape for the nuptials and happily shares the trick to her killer abs.

“I do bicycle sit-ups,” she says. “Also, just dancing when I'm moving my hips. If I'm moving my hips, I'm using all of my stomach.”

NEWS: Julianne Hough Gushes Over Fiance Brook Laich: ‘I Am the Luckiest Girl in the World’

And there’s plenty of hip-shaking going on during the siblings’ tour!

Hough admits she’s having a ball getting to work with her 31-year-old brother every day and that there’s no other dance partner she trusts more.

“I trust Derek more than everybody,” she reveals. “We call him ‘Grandpa Hough’ because he gets so nervous and worried about anything that he's the first person to be like, ‘Safety first!’ I’m like Hurricane Julianne -- ‘Let’s go full out, all the time!’ And Derek is like, ‘Be safe, be safe! Are you good? Are you good?’ So, we're a good combo.”

Having built an incredibly successful career from dance, Hough gave a shout-out to the teachers who encouraged her back in high school, particularly one named Tracy, whom she stills sees.

Helping teachers have adequate resources is the aim of Hough’s latest passion project ‘Thanks Teach,’ a fundraising initiative, which sees Sonic Drive-In donating funds, up to $1 million, for every tweet posted with the hashtag “#thanksteach.”

“Each year it's like a billion dollars that teachers are spending out of their own pockets, trying to make their classrooms inviting and warm, and also just on actual supplies that they need for the kids,” Hough explains. “Use the hashtag. We’re all on social media anyway!”

See Hough dish on her epic bachelorette party below.