to be a bit upset my sister has planned her wedding just a month before mine?

[BorgLady]

My sister called me yesterday to say her boyfriend had proposed. I was really pleased for her and I genuinely am, but I later learned that she wants to get married next summer, just a month before my wedding (which has been booked for a couple of months).

I don't begrudge her her wedding, but she and her boyfriend both earn well and have no children, so she will be able to afford a much bigger affair than mine and have it in a much nicer place with all the family I have decided I can't afford.

I can't help but feel a bit deflated about my plans now, particularly as she wants to wear my mum's wedding dress, which I was also planning to wear.

She is a different size to me, so I am not sure there will be time to alter it between weddings, and now everyone will have seen the dress (including my boyfriend who is not supposed to see it before the big day) just a few weeks before I wear it.

I know material things aren't supposed to matter, and that it's the marriage that's important and not the wedding, but I can't help feeling I've had my thunder stolen.

Am I just being a bitch, or would anyone else feel this way?

This is just classic little sister behaviour though isn't it? She loves you, looks up to you and wants to be just like you. And yet somehow all that gets morphed into unreasonable bratty jealousy.

Console yourself with the knowledge that she can never really win as you will always be one step ahead of her in life.

I speak as an older sister with bratty sibling

Borglady, try not to let this upset you.
Your sister is bang out of order. Stand firm about the dress and if she insists on going ahead with the wedding, well everyone will know that it is you who is in the more stable relationship and you who planned your wedding first.

Like I said before my sil did this to me but I still had a fabulous wedding she is now divorced from bil and tbh it came as absolutely no surprise to me when they seperated. She later admitted to her husband that she realised she had made a huge mistake in marrying him on her honeymoon and my gut feeling that she had deliberately tried to steal my thunder was confirmed.