Did this with 2 old pairs of jeans, using a wide-leg pair as the base and the legs from a skinny pair to make the triangular inserts. The skirt looks amazing, and I even got a bonus pair of cute cutoff shorts out of the skinnies!
Love the red, white blue combo. Like sailor-looking combos. Although do not like the dress itself for me--don't like to highlight my arms (cardigan would work) and I think the belt would cut me off, since my torso is already so short.