Yes. Leo is my boy and Evie is the girl. He's 15 weeks and she's 9 weeks. We just integrated Evie with our ither 4 kitties and Leo has really become fond of her. I can't stop taking pics of them together because he's like a big brother to her. So sweet!
Aw, they're so adorable! I also would have guessed they were from the same litter. The size difference is hard to see in the photo. And I have two from the same litter and the brother is bigger than the sister.
I'm glad your introduction went well and the two kittens are so close. I love pictures of cuddling kitties!