It seems like your friend is talking about someone else's pet, specifically a cat that had kittens. The text is in German, and here's a rough translation: "Omg!! Did you see what Lisa shared on Instagram? Her kitty had 3 babies - they look so cute. I want a cat too :((( " So, to answer your question, there are 3 new kittens, not human babies. If you want to congratulate your friend, you could say something like "Aww, that's so exciting about Lisa's kittens! I'm sure they're adorable" or "I heard about Lisa's new kittens, congrats to her!".