Activity for Shanée

What did everyone do for their bridesmaids? I was rhinking of these super cute kate spade initial necklaces that come in silver, rose gold, and regular gold and on the back they're inscribed "one in a million" for $58. I'll most likely be buying...

So I opted for a belly band instead of a pocket but when I put my belly band around my invitation, response card and info card they seem to slip around. I made the band as tight as I can. Is this normal? It would be nice if everything would stay...