Bob got a call from a friend one morning and he needed artwork by the next day for a popsicle sipper kit. He was requested to have a girl in pink and a boy in blue, about the same age, eating a raspberry and a grape popsicle using the sipper device. This ingenious product allows the popsicle to be made of your favorite juice/kool-aid/whatever and then put in the freezer. When eating the popsicle, any melted juice can be sipped from the built-in straw at the bottom.
Bob used his kids Claire and Ken as models. Bob made them to appear as the same age.
Below is a current type of product as appearing on eBay.