Alyson Hannigan Shows Off 20-Pound Weight Loss After 'DWTS' Participation

LOS ANGELES, CALIFORNIA - JUNE 11: Alyson Hannigan arrives to the Los Angeles premiere of Disney and Pixar's "Toy Story 4" held on June 11, 2019 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)

Alyson Hannigan may not have won the Mirrorball trophy, but she still has a reason to celebrate.

On Saturday, Dec. 9, the How I Met Your Mother alum took to Instagram to show off the 20 pounds she dropped while competing on season 32 of Dancing with the Stars.

Alongside a split photo, which included her week one promotional shot and a snap from the finale, Hannigan, 49, wrote, "The before and after says it all. I lost 20 pounds of both weight and emotional baggage during my time on @dancingwiththestars."

As she continued, the Buffy the Vampire Slayer alum shouted out her dance partner, "I can’t thank [Sasha Farber] enough for helping me shed my insecurities and getting me to the confident and strong place I am today!"

Farber applauded Hannigan's transformation, writing in his own Instagram post, "I wanted to post this picture and celebrate, how proud and hard working my partner was during the season!!!! I believe dance is the best way to exercise stimulate the brain and have fun in the process!!!!! I call it 'BodyBySasha' who wants to sign up !!!!!"

Hannigan also received love from her famous friends, with Sarah Michelle Gellar chiming in, "I just see confidence gained."

Seth Green, who played her love interest Oz on Buffy, wrote, "You’ve always seemed a goddess to me 🔥."

Hannigan and Farber came in fifth place during the show's 32nd season, losing the Mirrorball trophy—which has been renamed in Len Goodman's honor—to Xochitl Gomez and Val Chmerkovskiy.

Next: How Much Do the Celebrities and Pro Partners Get Paid on 'Dancing with the Stars'?