Why do grandmas?

my grandma has a hissy fit when I buy from hollister, or abercrombie.. she likes to shop "cheap" and stuff, and she always is like, omgosh, i could of sewn that by hand for you, when I buy applique tees from hollister, or, you paid "20 bucks for that?!!!" when my other grandmother, whos older, sweeter, and way more religious, loves the clothes, and apprecitaes the prices. does anyone else have grandmas like that that nag you for the clothes you wear? plz share.