French Lops - transportation??

Phoebe is a french lop, and at the moment when we go to the vets I put her in my sisters old cat basket. It's abit of a squeeze and she can't lay out flat only sit. (not good when she's getting stressy from being in there)

Phebs is having her spay soon so want to get a carrier she can lay in, I was just wondering what other big bun owners transport their buns in?

Thanks

we have a huge dog carrier.