Khloé Kardashian and her kids love their cat so much they got another one! On Tuesday, April 30, the 39-year-old shared an adorable video of her son, Tatum, 1, playing with the family’s new kitten, which Khloé got for her daughter True’s 6th birthday earlier this month. While their first cat was named Grey Kitty in honor of her stunning coat color, their new pet goes by Baby Kitty and looks like a nearly identical mini-me of their older feline sibling! In Khloé’s Instagram upload, Tatum could be seen running around the house in a Boston Celtics jersey — the team his and True’s dad, Tristan Tho…