We think Miss G is using the baby sign for "more," as illustrated above. These two pictures were taken at breakfast this morning. She seems to only use this motion when she is eating, so perhaps she is catching on.
In other news, she has now learned how to actually get the Gerber star* into her mouth on her own. And that, my friends, is a BIG DEAL round these parts.
*Also known as overpriced baby crack.