Activity for Erica Perez

I need some advice on how to properly address some of my invitations... I have a few family members whom are not married but live as married with kids and all. I'm just not sure on how to word it. The other invitations are being addressed by family...

Has anybody purchased a mermaid style slip/petticoat from amazon? I can't bring my self to pay $80+ for a slip from davids bridal. Someone suggested checking on Amazon but I don't know if they'd be good quality. Any body ever purchased one and...