"When we saw each other for the first time, it was like, 'And, we're done.'"As for her wedding must-haves, Hough said to expect the "best dance floor ever, best music, and [my dogs], Lexi and Harley, have to be a part of it. "EXCLUSIVE: Derek Hough Talks Julianne's Big Day & the 'DWTS' Double Wedding Weekend: 'It's Gonna Be Amazing'See more in the video above.LOS ANGELES, CA - MAY 08: Actress/competition judge Julianne Hough attends 'Dancing with the Stars' Season 24 at CBS Televison City on May 8, 2017 in Los Angeles, California.(Photo by Paul Archuleta/Film Magic)LOS ANGELES, CA - SEPTEMBER 11: (L-R) Actors Julianne Hough, Vanessa Hudgens and Kether Donohue attend the press room on day 2 of the 2016 Creative Arts Emmy Awards at The Microsoft Theater on September 11, 2016 in Los Angeles, California.(Photo by Paul Archuleta/Film Magic)LOS ANGELES, CA - SEPTEMBER 10: Julianne Hough arrives at the 6th Annual Celebration Of Dance Gala Presented By The Dizzy Feet Foundation at The Novo by Microsoft on September 10, 2016 in Los Angeles, California.' ad campaign at Hearst Tower on February 1, 2011 in New York City.(Photo by D Dipasupil/Film Magic)NEW YORK - SEPTEMBER 29: Julianne Hough attends the Netflix outdoor concert and movie screening at the Rumsey Playfield, Central Park on September 29, 2009 in New York City. Walker/Getty Images)BURBANK, CA - OCTOBER 10: Actress Julianne Hough (L) appears on the Tonight Show With Jay Leno at NBC Studios on October 10, 2011 in Burbank, California.
(Photo by JB Lacroix/Wire Image)BEVERLY HILLS, CA - SEPTEMBER 08: Julianne Hough arrives at the Television Academy Celebrates Nominees For Outstanding Casting at Montage Beverly Hills on September 8, 2016 in Beverly Hills, California.(Photo by David Livingston/Getty Images)ATLANTA, GA - MAY 11: Julianne Hough, MPG Sport Brand Ambassador & Designer, and Core Power Yoga Partner to bring free class to Atlanta and promote the launch of her Athleisure Wear line nationwide for MPG Sport at Core Power Yoga on May 11, 2017 in Atlanta, Georgia.(Photo by Marcus Ingram/Getty Images for MPG Sport )DANCING WITH THE STARS - 'Episode 2404' - The 10 remaining celebrities will take a stroll down memory lane and celebrate with a dance to a time in their lives that left a lasting impression, as they commemorate their most memorable year, on 'Dancing with the Stars,' live, MONDAY, APRIL 10 (- p.m. (Eric Mc Candless/ABC via Getty Images) JULIANNE HOUGHBEVERLY HILLS, CA - JANUARY 08: Actress Julianne Hough arrives at the 18th Annual Post-Golden Globes Party hosted by Warner Bros.(Photo by Michael Buckner/Getty Images)LOS ANGELES, CA - FEBRUARY 07: Actress Julianne Hough attends the Sole Society preview party at Mixology101 & Planet Dailies at the Grove on February 7, 2013 in Los Angeles, California.(Photo by John Sciulli/Getty Images for Sole Society)NEW YORK, NY - FEBRUARY 01: Singer/actress Julianne Hough attends the unveiling of the new 'got milk? Even if you can only do a little bit, when we all pitch in it adds up!