Ring Bearers

My 2 nephews (ages 5 1/2 and 2 years old ) will be my ring bearers for my November 27 wedding. I have 2 questions:
1. Should they wear the same attire (tux with tie and vest) as my Fiance and his grooms men?
2. How do I get a 2 year old to walk down the aisle?



OK, a 3rd question... If the kids wear the same things as the grooms men, do you have store suggestions?

Edited to say: My Sister (Matron of Honor) and BIL are both in the wedding party so they will already be at the Chuppa before the kids come down

Our ring bearer will be a little over 1 1/2. I know little but he's FH's nephew and we really want him to be in it. He will probably match the GM's or wear black vest. I don't know what they have that small.

To get him odwn the aisle ( we are having both parents in the BP) they will stand/kneel at the front and coax him down I think he will be fine