Bieber, 19, was photographed going back to his place after partying on his birthday earlier this month. Later, Wilde took to Twitter, and posted, "Bieber, put your shirt on."
This did not go down too well with possessive fans, and Wilde had to face their wrath.
"You know, it is something I would say to my little brother, and I probably have said it. You know, just, 'Put your shirt on. It is cold out there.' I meant it with all the love in the world," Wilde said.