What to do when someone forgets to put on panties!

Well this evening I needed to go to Bashas and usually I only take Kadie because the boys HATE to go shopping (I think this is something boys are born with). Today though Gavin and Ayden decided they wanted to go with me. We all piled in the car and off to Bashas we go. As I pulled out Kadie when we got there I notice she has a little bare bottom, she has no panties on underneeth her skirt! I somehow missed this as I put her in the car. Quickly thought to myself, do I want to go home and get some and I think no way. I also don't want to have her stay in the cart with me because as any mom knows it is awsome when they are old enough to go into the play center and shopping in peace is AMAZING! Then I think I will just make one of the boys give her theirs. So I tell tell Gavin to quickly take off his underware and give them to me. After a quick "mom what will I wear" I say you have pants so you will be fine just give them to me. If anyone knows Gavin very well he has been my most modest son since he was very young. This is huge for him to give me his underware. I put his long underware on Kadie and off we go inside. As I am signing the kids in I think I should probably tell the lady why my daughter is wearing boys long underware (since they are sticking out from under her skirt). As I procede to tell her she starts to laugh so loud. I was a little startled and asked is that ok? She just keeps laughing and says ya its fine I have never had that happen in here before and I just feel bad for the son who had to give them up. Gavin wouldn't go in because his pants now wouldn't stay up so he said "mom I am going to walk around with you".Needless to say all ended up well for all. I got peace from a 2 year old and 6 year old, Gavin got a candy for giving up his underware (mom guilt) and Ayden didn't know any different.