Winston Onix Gloria. 6 month old Siberian cat

I have just received pictures of our kitten Winston Onix Gloria. He was born on 10.04.2012 and he is 6 month old now. The owners Irina and Alex wrote me that his weight is 5,7 kg.
I would like to show here the pictures of Winston in 1,5 month and Winston in 6 month, so you can compare and see how he is growing.