I don’t think the dresses are dressed up enough for cocktail, but I do believe there is wiggle room with dress codes when you’ve just had a baby.
I’d go for dressed up comfort. I love wrap tie dresses in general, but even more postpartum. Easy to breastfeed, has some give when it comes to sizing and is flattering on the body.
I’d buy something in this style but in a more exiting color. No stress if the belly is still there, easy to breastfeed discretely and some more skin coverage if you’re not feeling your best in your body yet.