AITA for saying my sister "deserves" to have a smaller wedding?

I (25F) met my husband a year ago. We had been friends for years before, but we met a year ago and hit it off straight away. We got married four months ago and had a pretty small wedding with only close family and friends. About three months before the wedding, my sister (28F) announced she was engaged. I was surprised because she had told me she wasn't ready to get married yet, but I'm very protective of her and I didn't interfered when she told me she was getting married. <br><br>My sister said she wanted a big wedding like mom had. We were busy with the wedding so we couldn't really help her, and I didn't want to burden her with all the work by herself, so I didn't offer to help. The wedding went really well and my sister seemed annoyed I didn't help her, but I figured after the wedding she'd understand.<br><br>Four months after my wedding, my sister got married. It was beautiful and she did an amazing job planning it. However, after it was over, my sister blew up at me saying that everything would have been easier if I had helped, and that I had made it especially hard for her because I had a small wedding. I was surprised because I thought she'd understand why I didn't help. I said that I didn't have a lot of time, and that the most important part was that she got married, not how big the wedding was. She looked at me and said I was being selfish and that she "deserves" a big wedding because our mom had a big wedding. I said that clearly does not matter because I had a small wedding and I love my sister.<br><br>This upset my sister a lot and she later accused me of body shaming (I love my weight and height and I'm not insecure at all and she never said anything before so I didn't expect this) and that I'm making her feel bad about her life in general. I love my sister and the last thing I want to do is make her upset or hurt. I just don't understand why she's holding me accountable for her wedding. She also said I was a jerk for not helping her, but I don't think I'm wrong for prioritizing my wedding. AITA?