The Dance Your Ass Off host shows off her toned bod, posing for the camera while her son enjoys the carnival games.
The Mistresses actress looks lovingly at her son Milo while he attempts to catch a toy fish. Too cute!
"He's gonna go out of his mind. Airplanes are [Luca's] favorite thing in the world...he's going to be super pumped to play with all the toys," Duff said of her son, adding, "He's not gonna stay up for the movie [though]. I'm sure we're going to watch it at home. He doesn't sit still for long."
The golden-locked duo is all smiles on the green carpet.
This reality TV family looks ready to win the "Best Dressed" award.
The actor is a great vampire father in the Twilight series, but it's good to know he's just as great of a regular father to his two daughters.
The blond bombshell and her son happily check out the wide variety of toys at the event, hosted by Target.
The Zero Dark Thirty star flashes a smile for the camera with his little girl, who seemed excited to have cotton candy in her hands!
The daddy-daughter pair look super chic in their matching aviator shades.
The Desperate Housewives star had her own scary plane story to tell E!'s Marc Malkin at the premiere.
MORE PHOTOS: Movie premiere pandemonium