4-5 Months

Completed Task Hash out the flower proposal with your florist. Decide on your floral style, choose your wedding flowers, and settle on a final price for the contract. Once you’re certain the contract outlines everything you agreed upon, sign it.
Completed Task Decide on formalwear (tux, suit, casual button-down and slacks) and look through formalwear photos to get an idea of what you want.
Completed Task Finalize your rental list (tables, chairs, and any other extras) for the reception (unless the caterer or site is taking care of it).
Completed Task Plan the groomsmen’s attire. Tuxes or suits?
Completed Task Grooms: Buy or rent your tux, suit, or other formal attire.
Completed Task Update your wedding website — make sure your out-of-town guests know all the details. Add hotel reservation and city information and/or compile hard copies and mail out.
Completed Task Book a wedding-night hotel room.
Completed Task Book the rehearsal dinner site and finalize menu plans.
Make all honeymoon travel reservations, including your flights and rooms.
Completed Task Finalize the groomsmen’s formalwear. Let the guys know and ask them to get fitted for their tuxes (if need be).
Completed Task Address those invitations! Or drop them off with the calligrapher (you’ll need to send them out at the three-month mark).
Sign up for professional dance lessons at a dance studio near you or start choreographing your first dance.