Bobbi Kristina Brown-Gordon soaked up the sun in Cabo San Lucas, Mexico to celebrate her 21st birthday recently.
Brown-Gordon along with husband Nick Gordon shared pictures of herself poolside posing in a black bikini.
According to E! News, fans noticed that the star looked much thinner than usual and took to Twitter to express concern about her apparent weight loss.
Brown-Gordon wasted no time responding to the critics and tweeted, "I am my mother's child! Have you ever heard of a #fastmetabolism? Damn, lol it's incredible how the world will judge you 4ANY&EVERYthing."
Bobbi Kristina didn't let the criticism stop her birthday fun. She posted a picture of a brand new Louis Vuitton bag saying, "Thank you all for my birthday wishes !! @nickgordon I love you more then you'll ever know! Always nxt 2U :) #B&C."
The aspiring singer secretly married longtime love Nick Gordon on January 9.