Boots in unwinter?

My sister complained about this last year so I will ask all of you this year. Are womens boots a fashion faux pas in the summer? I found a really cute pair of ankle boots at the end of winter last year and my sister insisted that I could not wear them after winter. They weren't big furry Uggs or anything like that. They were cute little ankle boots. I think they would have looked just fine with a pair of shorts. What do you think?