Our Anna Banana was a small landseer as well. Note the word WAS ... hehehe. I think I can relate to how you're feeling. Our Barkley was so big that when we got Anna and I saw that she wasn't the same size, I felt disappointed.
Well...let me tell you...she's small no more! She will be 2 on Dec 3 and she has hit a growth spurt in the last three or four months! Filled out - got taller - and I might be wrong, but I think even her head has gotten bigger!
It wouldn't matter though - like you, she's huge in my eyes and my heart, and we love them exactly the way they are. But I'd buy one of your t-shirts...hehe