With both my little ones I loved putting them in babylegs. They were perfect for keeping legs warm when they were in the sling. Now on Facebook and Etsy I have had a couple of custom orders for knitted legwarmers. One for a little girl and one for a boy.
The girly ones are Adriafil Knitcol and the green ones, which were really tricky to photograph are hand dyed superwash pure wool I bought for Miss E whan she was born and never got round to knitting up!