Child star Willow Smith was left fuming on Sunday after hackers targeted her page.

The pop star daughter of actor Will Smith discovered an impostor had posted a bizarre message about a weight loss supplement from her account, and she immediately warned her followers about the internet prankster.

In a series of posts on her page, she writes, "U (sic) guys... I think I got hacked... I did not Tweet about the weight loss supplement... I don't know what's happening!"

Smith has already taken measures to avoid the same thing happening again, adding, "New password! No hackers!"