Sequin or metallic bridesmaid dress styles

The online shops LuLus, ASOS, and JJsHouse have sequin/metallic bridesmaid dresses. Also Adrianna Papell is a beautiful brand with the same!

^good suggestions. I'd also caution you to have your MOH try on her dress, and maybe walk around/jump in it, to test it's comfort level. All the friends I've know that have been in sequin dresses for a wedding have come away from the night with scratches and red dig marks under/around their arms and sometimes on their neck--it can be an uncomfortable option. There could be some dresses out there with better-placed sequins!

You can always look at prom or evening gowns if you can't find it in a specific bridesmaid dress

Azazie and David's Bridal have some sequin dresses. Not sure what your color is do it is hard to say if they have what you are looking for.

Once you find one you like, maybe look into the try on policy to see if you can try it on before buying (if looking at an online store) since sequins can be really uncomfortable. I know this is an option for a lot of dresses at Azazie!

You should check out revelry. They have a lot of sequin options.

David's Bridal. Also, the Kate Kasin Sequins All Over dress on Amazon has hundreds of great reviews and is Prime eligible. I ordered one to compare and it looks great in person. (My MOH ended up choosing the David's dress, though.) Otherwise, quality sequin dresses can get pretty pricey.