When did my kitten get so big?

How old is Hanna now ? She looks just a bit older than my Inka .
Inka is also growing so fast ...! But her head is still small , and she
weighs like nothing , almost like a bunch of feathers !! . She is such an adorable cuddle-cat ; she sometimes even begs to be picked up and instantly starts purring when we do pick her up !!
Kittens ,they are all so adorable ; but they grow up so fast ..!