Irma's Closet

Irma's Closet is a venue seen in the flash game Teenage Mutant Ninja Turtles: Shadow Heroes. Based on its name, it is likely a second-hand store.

While obviously named for the character of Irma, it is unlikely to be run by a known character by that name, unless the Irma of the 2012 TV series-based video games is a wholly different character from the "character" in the show itself. It is likely just an easter egg-ish reference.