Ollie has a serious case of hero worship.
Anything Reid does Ollie thinks is wonderful and perfect in every way. For instance this session of photos. Reid decided that sticking his tongue out was the proper thing to do.
So Ollie tried to stick his out as well. I see a lot of Reid coming up with things for his baby brother to do in the future.
The amount of time spent corralling these two is going to be epic.