Hilary Duff is one hot mamma!

The "Younger" actress showed off her killer body while vacationing with her son Luca Comrie, 3, and ex-husband Mike Comrie in Maui, Hawaii on Thursday.

PHOTOS: Hilary Duff Flashes Cleavage in Sexy Bikini Selfie From Hawaii

Donning an itty-bitty, colorful stripped bikini, the former Disney star revealed her toned stomach and legs.

Surprisingly, the family vacay comes just one week after Comrie and Duff’s divorce was finalized. Although, the pair has been adamant that split was amicable.

"It wasn't working well enough to stay together, but there was still a lot of love involved," the 28-year-old actress told Cosmopolitan in March. "It was just a slow set-in of us not being the match that we used to be. I'm lucky for the person he is and I am, and how we decided to handle this."

As far as custody of Luca, the pair was awarded joint custody according to legal documents obtained by ET. While appearing on The Ellen DeGeneres Show last week, Duff opened up about how the couple’s son is their main focus.

NEWS: Hilary Duff's Divorce From Mike Comrie Has Been Finalized

"We have such a great kid, and we're both so obsessed with him. We are good friends and we laugh a lot and we have a great communication. We share pictures when one is not with Luca. Yeah, he's great," she revealed. "We are great and we keep on trucking."