Transcript for Elaborate First Day of School Photos
But parents are snapping off quick shots before the school bus arrives. They are pulling out all the stops to make sure the first days are picture-perfect. And "gma" special contributor, cameron mathison, takes a literal look. Reporter: Like scores of moms around the nation, brenda of irvine, california, is busy getting ready for the start of another school year. There's a lunch to pack. Forms to fill out. And a first day of school photo shoot to prepare for. There we go. That's the shot. Yeah. I'm always surprised how much it makes a difference. Preparing a little photo like this. It seems funny at the time. But I'll look back and say, i remember that. It's amazing how much you forget. Reporter: Brenda is one of a growing number of moms for whom the first day of school photo is no longer an afterthought. But instead, a carefully choreographed photo op. Often filled with homemade signs. Last year's theme for helena was hello kitty. This year, it's cat ears. I wish I had photos o this when I was growing up. My parents had one or two photo albums. They're all faded. And they're all badly cropped. It's really special that I can do this for my daughter. Reporter: From coast-to-coast, moms are capturing first day of school in unprecedented style. Michelle maddic, founder of the mommy site momfinds, says social media is behind the photos. With pintrist, facebook and twitter, it's become almost a competition. And almost an arms race of who can take the best pictures of their kids. Reporter: Lauren of westchester, pennsylvania, says she used an x-acto knife and spray paint to create her photos of her son, braden. I think it's nice to have something to show their kids when they have kids, this is what I did on the first day of school. Reporter: So, what makes a winning first day of school photo? What kind of pancakes are we having today? Pancakes. Reporter: I decided to find out from an expert. Rebecca. Facebook is jam-packed with every friends, first day of school photos, their kids. It's a fun way to -- I don't want to say show off your kids. But you're showing off your family. Reporter: Last year, rebecca's photos of daughter, molly, went viral. This year, rebecca needs to prep three first day portraits, for molly, macy and little charley. After feeding all of the kids, with a breakfast of champions. Preparing for the day ahead. Going to be gentle. Rebecca gets down to business, constructing larger-than-life chalk drawings. And setting up elaborate desk sets for their children to pose with. And each click captures a moment in time and a first day photo, worthy of a fashion magazine spread. If you put this much effort into first day of school photos, what can the girls expect for their big wedding day? Oh, jeez. You know, I'll take that one step at a time. Reporter: The moms we talk to say these first day photos have come a long way from the sort of thumb over the lens candids their mothers snapped a generation ago. But the priceless sentiment, the first day excitement, the fist day nerves, remain the same. For "good morning america," cameron mathison, abc news, west jordan, utah. Coming up, kelly has a new
This transcript has been automatically generated and may not be 100% accurate.