These get a lot of flack, but I got a Nap Dress and it wear it tons--I've got a 7 week old and it's not only easy to pull down, it's super duper soft a nicely made, so I get as many wears out of one as I would a ton of cheapos (and it looks better, IMO). I did the cheap clothes thing the first time I had a kid and I felt shlubby all the time, so I just got a few nicer things this time and I'm glad I did--it's so nice to feel like I deserve quality things right now, as tired and gross as I feel.
Also! I also got tons of high waist bike shorts with pockets, and I wear them on their own with a top or under dresses--so handy to put my phone and chapstick, etc, in while I'm carrying baby and I like the support around the waist!