We're not talking about the size of your (or my) bum, but dreaming of full-fanny-covering panties -- something more difficult to find in modern-made lingerie. These big-bottom panties get bonus points for going clear to the waist.
Speaking of "clear" to the waist, the
Bettie Page Pin-Up Panty by Secrets In Lace are sheer dead-ringers for panties worn by Bettie Page. Full-cut panties of 100% ultra sheer non stretch nylon, featuring the classic wide lace accent around the leg openings.

These
full-cut Bettie Page panties, also by Secrets In Lace, feature a pretty floral applique. (Both Bettie Page panties sell for just $19 each and come in plus sizes!)

The
Lila Big Knicker by Lascivious has an arresting line of hooks and eyes for opening and closing up the backside -- and if that doesn't hook you, the detachable suspenders and flashes of bare skin at the hips is sure to catch your eye.
Fifi Chachnil's Sortir en Culotte Marquisette is a hi-waist brief with removable suspenders. There are magical control-top powers hidden in that contoured panel of silk and lace which will undoubtedly assist you in casting a spell on his magic wand.

Last, butt not least *wink*
Cameo Intimate's Retro Sheer Panty. These pretty babies are a retro-re-do, featuring the best styling of the past (including up to 8 garters!) and modern stretch mesh Lycra for fabulous fit and comfort. Plus, like all Cameo lingerie, they are custom made by hand lingerie creations.