Praying

When I got my buns I agreed with the owner they were female. They have just turned into teenagers (about 3 months old!) on has started to hump and get the better of the other I hope they are same sex!!

If you are unsure your vet should be able to double check they are both girls If you have any doubts about their sex I would separate them until you can have someone confirm that they are both the same sex to try and avoid baby buns

Humping is a sign of dominance so they could still be both girls and this would be normal behavior for two buns no matter what sex they are once their hormones have kicked in, if it turns out they are both girls just keep an eye on them to make sure it doesn't turn into fighting and have them spayed as soon as possible which should stop this happening x