My Violet was the same way. She hated it at first. She would dive into the nearest bed, pillow, blanket, and stay there for (what seemed like) hours.
I just started dressing her everytime we went out (for walks, shopping, errands), then she started to associate dressing with going out to do fun things with mummy. Now she (sometimes reluctantly) accepts it, but as soon as she's out, she completely fine and loves to go out.
