Old Navy has developed a line of clothing for babies called Little Bundles. This collection contains all the basics of a baby's wardrobe, including socks, cardigans, onesies, body suits, pants, hats and one-piece footed rompers.
These pieces of clothing are offered from 0-3 months up to 12-18 months. I have found that Old Navy baby clothes run fairly true to size. They come in the traditional pink and blue, but also more gender ambiguous colors like green and grey.
I love this collection because it includes all the basics. They are all made of soft cotton and hold up really well to the undoubted repeated washings they will have to endure. I have never had a seam or a snap come loose. They are all very cute, too!
The prices are really reasonable, which is important since babies tend to outgrow things very quickly. Overall, I would highly recommend this line of basics from Old Navy for your baby!