Perfect Match's Danica McKellar on Going from Real-Life Bride to Type-A TV Wedding Planner

Exclusive: See Danica McKellar's 'Luau-Themed' Wedding Cake

When Danica McKellar chose her wedding cake, she wanted it to fit in with her beachy-bridal vibe — and please all of her 25 guests.

Danica McKellar's Wedding Dress: See the Gorgeous Exclusive Photos!

13 Surprising Revelations of The Wonder Years Cast Reunion

Back in May, the cast of the Emmy-winning coming-of-age TV series The Wonder Years reunited to film some extras for the show’s DVD release. The beloved show about growing up in the 1960s (filmed in the late ’80s and early ’90s) has been off the air for two decades, and the actors hadn’t all gotten together in over 16 years.

Danica McKellar: 'I'm the Happiest I've Ever Been'

These days, Danica McKellar is all smiles.

For starters, the former Wonder Years actress and mom to 4-year-old son Draco is the new spokesperson for Colgate’s Smile for Picture Day campaign, which helps kids learn about dental hygiene. But that’s surely not the only thing that has her grinning.

Three Unique Celebrity Engagement Rings to See Now

Danica McKellar Engaged to Scott Sveslosky

Danica McKellar is getting ready to head down the aisle!

The actress, 39, and her boyfriend Scott Sveslosky, a partner at the international law firm Sheppard, Mullin, Richter & Hampton, LLP, are engaged, her rep confirms to PEOPLE.

“Scott and I are thrilled,” the actress tells PEOPLE in a statement, adding that the two plan to wed later this year.

Fred Savage Teases Wonder Years Reunion on Twitter

Dancing with the Stars Recap: Two Perfect Scores, One Tough Elimination

Danica McKellar Breaks a Rib in DWTS Practice