I think I may have a German Giant on my hands! My female is about 2 years old and is about 21 inches and as of today (after a BM) is 763g. Could she be a German Giant?
German Giants are very rare actually. If you could post some pictures of her, it would be helpful. Views of the side of her head/face and top of her head would be good.
She is definitely a nice looking girl! It is rare to have a 100% german giant, but she could have a decent percentage in her though no doubt with the size.