Celebrity trainer Jillian Michaels hit the beach with her family during their vacation in Miami this week. On Monday, Jillian flaunted her fit body in a bikini while splashing around in the ocean with her daughter, Lukensia. The mother-daughter duo returned to the waves for some fun in the sun on Tuesday along with Jillian's girlfriend, Heidi Rhoades, and the couple's son, Phoenix. Jillian and Heidi likely headed south with their little ones in an effort to escape the NYC chill, as the foursome was bundled up for a stroll through the city last week. The beach getaway comes in the middle of a busy month for the fitness guru, who recently announced a partnership with Curves gym to launch a new workout system that will debut in January. It seems as though Jillian's daughter is also excited for the months ahead — just a day after Halloween, Jillian tweeted, "I woke Lu up this morning and first thing outta her mouth was "what's next, Christmas?" #nodummy."