The Naked Cowgirl will be singing the blues.

The Times Square entertainer was tossed in the pokey for snapping pics with tourists and then charging money, cops said yesterday.

Louisa Holmlund, 28, was arrested Wednesday evening at the Crossroads of the World for allegedly making moolah without a valid license, a misdemeanor offense.

Holmlund — a licensed franchisee of the Naked Cowboy — is from Portland, Ore., and has been strumming her guitar since 2005 in nothing more than pasties, a skimpy skirt and an American flag cowboy hat.