Went and picked up a couple at Victoria's Secret because I had a coupon for a free one. They are super comfie, super cute and 1 size, so they should last a whole pregnancy.
The big dilemma? $11.50 a pair normally which is way more expensive than the super comfie but not as cut undies I get at Motherhood. How do I get more coupons for free ones, LOL?

Re: Well, whoever recommended "the lacie" was right
https://www.forever21.com/product.asp?catalog%5Fname=FOREVER21&category%5Fname=intim%5Funder%5Fthong&product%5Fid=2000010324&Page=all&pgcount=20
https://www.forever21.com/product.asp?catalog%5Fname=FOREVER21&category%5Fname=intim%5Funder%5Fboyshorts&product%5Fid=2083684374&Page=all&pgcount=20
Same things, except way cheaper. I ordered a bunch from here last week and I am loving them. Also, Walmart has some stretch lace ones sometimes that are great as well. They aren't one size but they are super stretchy so if you order what fits now, I think it could work the whole pregnancy.
I do that too!! I think all the underwear I own are lacies with a few odds and ends. They are awesome and don't wear out like other cheaper versions.