Would the dress in the second photo work on my body type?

I’m doing some clothes shopping for an upcoming holiday and sent a photo of the dress to my family group chat to ask for their opinions on the dress and my sister said it wouldn’t look good on me and that a poofier dress would be more flattering for my body type but she didn’t say why.

I don’t wear dresses often but I’m trying to find the best style that will flatter my figure, I want something pretty and feminine with pastel colours or floral patterns like the one in the photo that I can wear going out for dinner in the evening on my holiday.