Let me start by saying - don't pick your wedding party too soon! Back 
when we got engaged I had every intention of having 3 Bridesmaids and 2 
Junior Bridesmaids on my side, with 4 Groomsmen on his. I was planing to
 have everyone pair up, except my brother (one of the groomsmen) would 
walk both Junior Bridesmaids down the aisle - they're our cousin (12) 
and stepsister (11) - so I figured the age gap would be fine. Well, 
things didn't work out with one of the girls I was going to have as a 
Bridesmaid (thank goodness I hadn't asked her when our friendship went 
haywire), so I now have two adult Bridesmaids and two Junior 
Bridesmaids. Is it totally weird that the guys have to walk with young 
girls or am I over thinking this?