Sure, identical outfits would look cute, but depending on your timeline and budget, it might not be doable. To simplify, choose a color group rather than buying matching outfits for everyone. Using color to tie everyone together allows for more clothing options, especially when you have a large group with varied ages.
And be sure to plan ahead! "Make sure you have outfits picked out and put together the day before your session, at the latest," said Meaghan Aldridge, owner of Aldridge Photography in Saratoga Springs, NY. "You do not want to be stressed out or running around at the last minute. Make sure everyone is well rested, and have a nice relaxing morning beforehand. Young kids especially can tell if you are frantic. Also, give yourself enough time to get ready so you look and feel your best!"