Christina Aguilera's 'borrowed' look from singer Lady Gaga is apparently a mystery to the Genie In a Bottle star.

The singer - who is launching her comeback after giving brith to her son Max - told a US publication that she doesn't even know who Lady Gaga is let alone what she looks like.

Christina told the LA Times, "You know, that’s funny that you mention that. This person was just brought to my attention not too long ago.

Christina (left) claims not to know who Lady Gaga (right) is

"I’m not quite sure who this person is, to be honest. I don’t know if it is a man or a woman.

"I just wasn’t sure. I really don’t spend any time on the Internet, so I guess I live a little under a rock in that respect."

See Christina's new look here