Ravelry is a haven for patterns (read: free) and so I selected the Springtime Tee designed by Melissa Leapman. I think it's gorgeous and surprisingly there are only three of us on Ravelry who are working on it. (I'm using Bernat Handicrafter yarn in off-white: it's soft, inexpensive, and because it's 100% cotton so will wash up easily.)
Here is the back, with the first lace pattern repeat completed:

This is a close-up of the same:

This is how the lace repeat on BACK piece looks when finished:

I'm loving how this is going and I think that my niece will like the completed sweater. I've finished the St st (measuring 13 1/3 inches from the bottom) and right now I'm working on shaping the armholes. It looks like I may need to frog a bit - either I'm counting wrong, or the pattern is wrong... :-)