does this seem rude or is it just me???

Paige
My baby shower is march 25 & will be thrown by our mothers, they've asked me to do a private event on fb but not to invite too many people unless I know for sure they're coming & are bringing a gift; not just showing up for food! Does it seem rude to ask everyone to at least bring a pack of diapers? & if not, how should I word it so it doesn't come off any way?? Lol