A.V.
I never had maternity underpants. Mine fit all the way through, and most are low-rise bikinis.
I retire underwear when it gets frayed or torn or worn out. I do have a pair of Tigger that I got in college that I keep on hand as spare only. I don't wear it regularly anymore.
I guess, too, does he mean underwear that is fun and new or underwear he'd like to see in the bedroom? They are different things. I personally like bright colors and cotton and DH doesn't care. My stepdaughter buys the VS Pink line, but says the regular VS underwear doesn't hold up (which has been my experience with a free pair).