I am so upset

Sandra
My gender reveal party is Saturday and Stupidly I put some girl stuff on my registry last night and my sister went in there and saw that I'm having a girl and I'm super upset about it! Why did she did that, I understand it's my fault for putting it on there but I didn't think she'd go on my registry. She said she won't say anything and I went on a removed the girl stuff I put on there but I am so upset