Una, I would absolutely wear a sari to an Indian wedding and I'm 31.
The auntie look comes from:
A figure with more avoirdupois than yours
Full coverage blouses
Stiff starched saris that stand away from the body when worn, creating extra bulk.
If you have a modern cut blouse that shows a little skin (sleeveless or shorter sleeves, scoop neck or back) and a sari that drapes well (silk georgette is particularly nice), there will be zero risk of you looking like an auntie.
You know if you wanted to dress up in your Indian clothes and post photos for the forum to evaluate, it's not like anyone would mind.
(Because I'm a narcissist, I've attached photos of my sari with the scandalous blouse (halter top/backless) from the last wedding I went to. With a conventional blouse and the sari draped around more of my body, it would have looked auntie-ish)
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