Movie that starts with two professional wardrobe organizers

I remembered a movie that starts with two women that work organizing a big walk in closet of a rich woman. At some point they start trying on the clothes of the client and get caught. I also remember that one of this women is given the dress/coat/something that she has tried on from that client and that was stolen by the friend. I am not completely sure the last scene belongs to the same movie, I hope so. Thanks in advance, any help is appreciated.