Congratulations go out to Danica McKellar!

The former "Wonder Years" star and her boyfriend Scott Sveslosky, a partner at an international law firm, are engaged, her rep confirms to People. The 39-year-old also took to Instagram and Twitter to share the news, posting a photo of her ring and writing, "So ... can you guess what my big news is??"

Yep, my amazing boyfriend Scott & I are engaged!! (He's the one @iamvalc did a shout out to on #DWTS) :) Hugs to you all!

- Danica McKellar (@danicamckellar) July 16, 2014

"Scott and I are thrilled," McKellar tells People, revealing that the two plan to wed later this year.

The actress, who appeared on last season of "Dancing With the Stars," has a 3-year-old son, Draco, from her first marriage to Mike Verta, whom she split from in 2012. Sveslosky is also a father to son Hunter, 10, from his previous marriage.

"We are looking forward to merging our families," McKellar says.