I just finished sewing these knit pjs as gifts for three nieces. I've become a bit untimely and gotten in the habit of lumping the production and shopping of gifts into one time period rather than as the birthays happen.
These pajamas were made with Kwik Sew 3234. While Kwik Sew patterns are a bit more costly, I like their basic classic designs and find their sizing very true to ready made clothing. Most of the serger friendly patterns say you just need to serge the seams but at my house this results in blown out bottoms or under arms so I sew the seams with my regular machine and then finish with my serger. It adds time to the process, but I really don't like mending later either.
This pattern is for sizes 4/5 up to a 14, so one pattern takes care of my 2 boys and 6 nieces & nephews. Using fabric from my stash, I made 2 short pj sets in a size 6 for one niece (that used up smaller yardages) and then had a large piece of fabric that I got 2 size 10 long sleeve pjs with pants from.
As the kids get older, it seems more challenging to find the correct size labels so I used this tutorial to make some twill tape size labels.
Now I just need to find that bag pattern I lost or I'll have to come up with something else for the rest of their gifts!