Princess had a growth spurt and her leggings are too short now. 5T fits her waist but is Capri length, 6T is long enough but baggy.
So I decided to sew some up, seriously the easiest thing you can sew.
You need about 1/3 of a yard of cotton/lycra, and a pair of leggings that fit. Thats it.
Fold the leggings in half inside out (for seam allowance)
Fold the fabric enough that the leggings fit , lay the leggings with the inseam away from the fold.
Cut out 2 of these, sew up the inseam on each piece. Then match up the seam on the rise and sew both pieces together. Then you're done!