It was a good run for sexy underwear. Apparently granny panties are coming back, baby.

Thong sales have gone down 7 percent during the past year; and sales of larger types of women’s underwear are up 17 percent.

There are three theories on why underwear trends are shifting to bigger options:

1. They’re more comfortable.

2. They can be more flattering on some women . . . and by covering up areas you feel insecure about, they could actually make you feel sexier.

3. They make a feminist statement.