You are correct.
The Gap is a chain of American clothing stores. “Gap for Kids” would sell children’s clothes.
Student or Learner
When I was watching a British TV series "Miranda ",I was perplexed by the expression stated in the title.The context is that Miranda and her friend stevie are squabbling because they are sort of competing to become a friend of a girl who they recently met.During their squabble Miranda probably makes fun of Stevie's smallness by saying "Ooh, wearing our coat from Gap for Kids, are we?"I guess "Gap for kids" is a name of a shop selling children's clothes,but I'm not sure about it.In a word,I can't figure out the meaning of "Gap" here.Any help to my understanding of this expression will be much appreciated.
When Gap was founded in 1969, its targeted customers were younger generations (hence the name of the store, which refers to the generation gap of the time).