I found this skirt on clearance at Babys R Us, but there was not a matching shirt to go with it. Well, I wasn't going to let that stop me:)
I got 1 yard of ribbon and a plain white t-shirt.
tie a bow in the middle of the ribbon and pin it directly onto the shirt.
Arrange the 'tails' of the bow in any fashion you want. There is no wrong or right way. Just go for it. Here is a close up of what I did.
Then stitch it down.
$8 total for 2 shirts to match a skirt :) Not too shabby!