Bobbi Kristina Brown is used to haters. The 21-year-old daughter of singers Whitney Houston and Bobby Brown made headlines in January when she married Nick Gordon, whom Houston unofficially adopted when he was 12.

But when she posted a picture of herself looking unusually slender on vacation over the weekend, Brown seemed shocked by social media users who said she looked too skinny.

"I am my mothers child! Have you ever heard of a #fastmetabolism ?" she wrote. "D**n, lol, it's incredible how the world will judge you 4ANY&EVERYthing."

"DAMN, point blank I'm happy in love healthy, doing what I do best," Brown tweeted Friday. "#Entertainment! Look in my eyes & see what WE see, do what WE do . . ."

Gordon also stepped into to defend his new bride.

Working out Eating right and loving life is how my women keeps her body nobody cares that you are concerned what important is she is comfy," Gordon tweeted Tuesday. "My baby is perfect the way she is."