Christina Aguilera says that her three-year-old son Max is so "protective" about her that he refuses to let anyone touch her without his permission. "If he was here right now, when you shook my hand [to greet me] he'd be like, ‘No! Don't touch my [mummy's] hand.' He doesn't get the whole thing yet that like mummy is a public personality. "So he's very protective. When I'm getting my make-up done and things like that, he's like, 'No! Don't touch!' And then he cuddles with me," dailystar.co.uk quoted Aguilera as saying.