Bridesmaids. The ones that get you so nervous / excited you can hardly breath during the morning makeup and hair... But the ones that also offer up the champagne.
The ones that will struggle with the buttons on your dress... But the ones that WILL get you into your dress.
The calming voice of reason... But also the voice of total inappropriateness!
The first ones on the dance floor... And the last ones to leave your reception.