Like I said the perspective issue needs resolving before we can definitively say how big Bozzas telly is. Bozza might have baubles the size of beach balls for all we know.
That picture could be deceptive as I cannot judge perspective. The TV could be enormous but very far away or if could be that you are hiding in the tree whilst taking the picture.
Could you place something in the mid ground to assist with depth of field. Something with known dimensions like, oh...
I imagined that you would have a sumptuous lounging area with an enormous wall mounted cinematic TV...maybe even one with a curved screen. So this begs the question: do you:
A) have an enormous tree
B) have a tiny room
C) both
D) neither
E) place your tree deliberately to obscure the blonde...