Christina Aguilera and Gwen Stefani Christina Aguilera and Gwen Stefani Has there been some fashion thieving going on?

Yes, we think Showbiz Sherlock may have stumbled upon a case.

Ready to do some style snooping?

In a fashionable manner, of course.

Since the very topic Showbiz Sherlock is putting the focus on is when stars decide to get a bit of fashion inspiration from, well, other famous types.

Think Christina Aguilera's red pout and peroxided hairdo.

Before her, the lovely Gwen Stefani made the look her very own.

Get clicking in our gallery and meet the other copycat celebs.