I made a little brother kitten oc for my labradoodle oc being Lina although she is the big sister to him as his name is Willie even though he is very cute and loves his big sister very much he can smile and cuddle her which she sees him happy, although that the 2 are have a big sister/little brother bond where they meet the bunny sisters being Mina and Bennie who greets them too to enjoy their day. For Willie he loves Lina very much as he likes her being his big sister and he is the little brother since the kitten is very happy to meet her but wishes for her to be bigger, although Lina is walking with Willie who has a balloon but can't reach it so the labradoodle goes to get it but falls in the rubber chemicals and merges with them as she grows taller and gets the balloon for him. As Willie sees Lina in her new form but sees his big sister growing bigger and fatter as she hits the ceiling since the little kitten hides from the very big labradoodle as she bursts through, as he hid by her big huge black heels but sees his big sister in her rubbery new giant form as she sees her little brother as he gets scared to look up at her. But Lina gently picks him up with her big hand to calm Willie who sees her doesn't harm him although that the fat ginormous labradoodle cuddles the tiny kitten by giving him a big hug in which the big sister makes the little brother happy, plus Lina can put Willie in her pocket since she looks so tiny as she looks so ginormous but let's him jump on her belly as a big trampoline even though that the labradoodle doesn't mind it but sees the kitten glad to see her as a ginormous big sister to a little brother like him.