148.35: the amount left in your checking account until pay day.
847: the obvious sign you’ve left the city for greener pastures.
4: the number of hours you won’t get back from your wretched blind date last night.

Sometimes it feels like the world is just one big numbers game.

But the last place you want to feel beholden to digits is in your skivvies. Thankfully, Sister Underwear has done away with numerals and introduced a sizing system based on a different measure — the shape of creator Sara Graham’s seven best friends.

There’s Nina (the well-rounded small package), Danielle (the curvy girl with height), Charlotte (a beauty with a bottom and bust to boot), Kate (who’s tiny all over), Gina (all slim hips, thighs, and legs with a rump), Julie (the Wheaties athletic cover girl), and Sheila (who proves once and for all that bigger is indeed better).

Each cami, panty, and slip is made with a touch of Spandex to help it lovingly hug your curves. Proving that whatever your shape, Sister Underwear has got your number.

Without reducing you to one.

Available at Isabella Fine Lingerie, 1101 West Webster Avenue, at Seminary Avenue (773-281-2352); to view styles, go to whoisyoursister.com.