Don't worry, MC, it seems to be a younger trend (so if you're old, I am, too). My kinda cousin had her senior pictures taken by a photographer who was on a list of twenty-some that the school gave her. Yes, she had the floral swing (I think I developed a slight case of diabetes from that one), headshots, body shots,
BODY shots, and at least ten outfits. Color pictures, black and white pictures - you name it. You could almost call them by name - Hollywood, halo, good girl, bad girl, naughty girl, baby girl, etc, etc. And being an only grandchild, they got plenty of all of them.
I think we had 8-12 poses, all in the same outfit. Top, actually, since they were all head shots only. I remember that the (school chosen) photographer freaked because I used a curling iron just before my picture was taken, and it cost him a whole five extra minutes! And because our yearbook editor was doing some sort of Hollywood glamour theme, we had to have all black and white pictures.
So, while I think the current mega-shots is over the top, I guess it's better than what we had.