I've decided to see if anyone's willing to pay for my patterns - I'll still be posting freebies too, but this baby set took a lot of working out to get right, so here goes! It's available as a Ravelry download for £2.50. It comes in one size only, hence the relatively low price - 18" chest, or approximate age 3 to 6 months, commonly known (at least in the UK) as "second size".
There are a couple of techniques used in this pattern that may be unfamiliar, but don't be put off - they are easy to learn.
The first is the I-cord, used for the hat ties - most US knitters will know this already, but UK knitters are more likely to know it as French Knitting or "corkwork". We used to make our own "Knitting Nancy" from a wooden cotton reel and four nails. The lucky ones among us had a manufactured version with staples, which was much easier to use. The I-cord is simply the same thing knitted on two double-pointed needles - see Knitting Daily blog here for instructions. You can use 3, 4 or 5 stitches depending on the thickness of cord required.
The second technique is the Cable cast on used in the hat - a good explanation of this technique can be found on the Knitting Daily blog here. This is a 2-needle cast-on which is more elastic than the normal method.