Buying maternity clothes is tricky - it's hard to know if something will fit and be flattering. Not many stores carry maternity clothes and those that do have a limited selection. I found purchasing from stores with good return polices (mostly Nordstrom (easy by mail) and Target (I typically just return to my local store) are good bets!
Here are a few of my favorite basics (both maternity and non maternity!)
black leggings (with one BIG caveat - I found the top of the waist band extremely uncomfortable, both up and folded down, so I ended up cutting out the thin elastic band on the top - now super comfy! (I wish I would have just tried cutting out the top of the elastic first, before the whole thing to see if that would have made it loose enough) They do slip down a little, but not bad too bad. They have good reviews - so maybe I'm just sensitive to things being tight on my stomach? They are super thick and the fabric keeps its shape wash after wash. They run a little small, so if in between sizes, go up // tunic chambray shirt and one more love wearing this open with a tank underneath - love the longer length - perfect for leggings // I like this chambray shirt unbuttoned and tied above the bump with a maxi dress // My favorite T-shirt - it's loose, but still flattering (I wear a small or a medium and I went with medium) // Long open cardigan - perfect for leggings! I also found a few at TJ Maxx/Marshalls so check there too! // Converse Shoreline and Jack Purcell love that these both slip on - perfect to avoid bending over to tie your shoes!
Tank dress I don't personally own this one, but love the tank style - great for layer with a open tunic // Jean jacket another great layering option! Here's a leather option // My favorite tank - it's super long, so you're not constantly pulling it down, love the material too! and the price is great! I hang mine dry to prevent shrinking // Another similar option to the first tank dress, this one is great for petites, I'm 5'3" and it's the perfect length. I also like that it comes with a seperate slip dress underneath so it isn't thin at all // Loose swing dress - l o o s e enough said and the price is great!!
You'll notice that a lot of things aren't maternity and most everything is very affordable! Most of these items should work all the way through pregnancy and you can wear after too! I hope this list helps, I had a lot of trial and error! If you have any favorites, share in the comments below!