is it possible for a 34 weeker to be 9 lbs?

my cousin just gave birth to a 34 weekr and he was 9lbs. for sure because she was ivf so she knows the exact date of conception

Well then it obviously is.

I guess so  

My 35 weeker was 7lbs 11oz.

Did your cousin by any chance have GD or any other problem that would cause baby it be big?

I suppose it is, then, yeah.

Really? If it happened then YES this is possible!

Did she have GD?

with IVF, people usually measure from implantation
so, 34 weeks is the equivalent of 36 weeks from LMP
still, 9 lbs seems large for 36
but it's more believable than 34 weeks