"Offically" asking the maids

I'm been scouring the web for different and cute creative ways to ask my girls to be my bridesmaids. I couldn't really spend a whole lot of money because I am having 1 MOH and 9 bridesmaids. Yes, I know that is a lot, I've been told by many people but as I've said before K has a 4 brothers and wants to include friends too so 10 on each side is how it is going to work. So instead of spending money I came up with a nice heartfelt idea.

I bought these adorable photo cards below at Target and I am going to put a picture of myself and my bridesmaid in the card and then write a note about our friendship and ask them to be in my wedding. Many of the girls already know because we've talked about it before or I got to excited and slipped up! oops! But I'm excited to "offically" ask them to be in my wedding.

How did you ask your maid of honor and/or bridesmaids to be in your wedding?