Please tell me I’m allowed to have a nice, expensive dress

I am having a micro wedding (16 guests) in late July. I always imagined I’d get a simple, inexpensive dress, no train, maybe even on the short side. I’m a very practical, frugal person, so I had told myself spending hundreds of dollars on a dress I’d wear once is ridiculous, and wanted to find something I could wear again on an anniversary or something.

Well, none of that is what happened. Since I am frugal and practical, and our wedding is so small, I haven’t discussed budget with anyone. My parents keep saying they’re “getting off easy” so they just say whatever I want is fine. That brings us to the dress. My town has a bridal mall with tons of bridal shops in one area, so my mom and I went there. But, I didn’t research each store beforehand, or really have a plan, so we just went into the first store we walked by and that is where I got my dress. It cost $2k, is lace with bead detailing, and has a super long train.

I absolutely loved it and so did my mom. I didn’t feel pressured or anything. It was the 8th dress I tried on. I think it is gorgeous and looks great on me. But I now have immense regret because I feel like it costs too much, I probably could’ve found something similar for cheaper, and I cant return it, and the train is so long, why is there so much fabric? It feels over the top for such a small wedding. I feel bad making my mom spend so much and it doesn’t even include alterations. It’s way too nice for me to ever wear again. It just feels wrong now that I’ve had hours to think on it.

Can anyone rationalize this decision for me so I stop feeling such immense regret over a gown I actually love? Why do I feel so terrible??

*Updating just to say THANK YOU to everyone who has commented such nice things! I have read every comment though I don’t have time to thank everyone personally because *wedding planning, but I did not expect to get so many kind responses! They really have helped me feel so much better, I’m feeling super excited about the dress again and my nerves are easing. I keep looking at the photos and I am absolutely in love with it still. I think the sticker shock and finality of the purchase is what really sent me into a tizzy haha. I am excited to be the bride and enjoy my day. What a lovely community 🥹❤️