Britney Spears britfivefinger.jpg

Our guys are out with Britney right now -- she was doing some shopping at Fred Segal -- and it seems she may have forgotten to pay for the clothes she changed into and wore out of the store!

Apparently she entered wearing a leopard-print top and exited wearing a black shirt over it.

The cops are at the Melrose store right now and the paps are going wild with rumors that Brit may have had another 'blue lighter' moment.

Stay tuned for details ...