My husband and I are disagreeing about whether this is weird or not. We have a few couple friends that either don't have kids or are pregnant with their first that we and DD spend a fair amount of time with--dinners out, etc. One of us thinks it's great to invite them, the other thinks it's weird. The party will be in our backyard, low key, on a saturday afternoon.
[Poll]
Re: Poll: Invite adult friends to 3yo bday party?
I think that whether or not you & your LO are close with these adults should be the deciding factor...not if they have kids.
Personally, I would invite them. My best friend has been coming to our kids' bday parties for the last 14 years. She just had her first child 3 years ago. She loved being a part of our kids' special day.
I have a couple friends that are still single and we always invite them...and they always come. My kids love both and are very excited to have them here for the party.