Hough, 27, shared the news Tuesday with an Instagram picture of herself admiring her ring while being embraced by Laich, 32, who plays for the Washington Capitals. Laich also posted the same picture.
Laich proposed in Coeur d'Alene, Idaho, where he is vacationing with Hough's family, including her brother Derek.
Hough and Laich have been dating since late 2013, shortly after Hough ended her three-year relationship with Ryan Seacrest. She was previously engaged to dancer Zach Wilson in 2007. This will be the first marriage for both.