Paul Frank, the designer with cute monkey insignia, has a store in the downtown San Francisco on Sutter Street.
Do not be afraid, all clothes do not sport the monkey and are not childish at all. There are also “zoo type” garments and accessories, especially bags seem to have a lot of animals in them.
The store is not very big, but the selection is still okay.
www.paulfrank.com, 262 Sutter Street, San Francisco, CA, USA, +1 415 374 2758