I’m A Big Girl Now

My princess’ new thing is not wanting to be buckled in her high chair during meals. She protests quite loudly when we try to put her in. If, by some chance, we do get her in without protest, she doesn’t last too long. After a couple days of this behavior, I realized her problem. She wants to sit in the chair instead. Tonight, once I finally broke down and let her sit in a grown up chair she was happy, and continued eating her vegetable and tofu stir fry. Does 15 months seem young to be wanting to move to the chairs? Should I just let her sit in the chair (or stand sometimes)? Or should I be firm and make her stay in her own seat? It is times like this where I am clearly clueless.