Activity for #Mangum'sWorld

What are you all feelings about ordering bridesmaids dresses offline, I saw this dress for my BMs and sent it to them in our GroupMe they have fell in love with it, I'm just so scared about them ordering it so my plan is to go ahead and order one...

So my question is HOW DO I PICK A THEME? I have my colors chosen and my bridesmaids dresses, Even already got most wedding songs and my hashtag But how to pick a theme or is it just even required