I'm in the process of upgrading my underpants - I decided that I'm too old for VS at 36, even for the $5 for $25 underpants. I'm a little bit obsessed with
https://trueandco.com/ It's data-driven underwear - there's a quiz, and they send you recommendations. They sent me adult underpants! (I love saying underpants, sorry, it cracks me up every time). I'm pretty happy with the service so far - I've only used it once. I think I sent back about half of the stuff I ordered.