Growing up as an only child, the bride always wanted a sister. Turns out, she found one in her new sister-in-law! She may love Louie more than the bride and groom, but they like to think they are a close second.

One of the bride's best friends from college, Lauren has seen it all- the good, the bad, and the ugly- and she still loves Molly!

Both teachers at the same school, Kathleen is the bride's teacher bestie. If she can keep Molly sane during the school year, the wedding will be a breeze!

In college, Brie and the bride bonded over Friday happy hours with Blue Moon beer, mozzarella sticks, and country music. The happy hours may be less frequent now, but there are still the best and so is Brie!

As the groom's brother, there is no one better to stand by his side on the big day. Pat runs marathons for fun and makes it look easy, so we know he will make this role look like a breeze!

Pat is the groom's college roommate and the bride's cousin, so he is the whole reason we are here. Without him, the bride and groom never would have met! Make sure to thank him on the big day.

Tim is one of the groom's oldest friendships and it's easy to see how- Tim is the best and don't worry ladies, he's single!

Sean and the groom go way back and it's easy to see how they've stayed friends for so long. Everyone needs a Sean Brady in their life!

Dan is not only the bride's cousin, but also personable, hysterical, and always sharing a fun fact! You just might learn something at the ceremony.