Bath Time Blunder

So, last night Grace had her normal nightly tubby. Where she played with water markers and her new Barbie's. When she got out of the tub I asked her if she wanted to wear her bathrobe. She said "yeah" very excited! She loves that thing! So i put it on her and she patted her belly and took off playing. I went into the guest room to fix an outlet cover and next next thing I hear is "uh-oh" i look up and there is Grace, in her robe, standing on a little Grace size puddle. yup, she peed! I told her it was OK, since I never put on her diaper. But she was laughing at her mess and wanted that robe off!