Reposado is a delicate, versatile layering piece, meant to be worn loose and swingy. The lace pattern along the sides makes for a beautiful detail at the hem and along the sleeves, and it's gorgeous in a yarn with just a bit of texture to it. I worked mine in fingering doubled, but a straight DK will work beautifully.
It's knit in the round to armholes and then separated and front/back are worked flat to shoulders separately. Lace is both charted and written. I suggest choosing the size that allows for 4-6"/10-15cm of positive ease at bust for the fit as shown.
The sample is shown in Yarn on The House Best Friend. A suggested substitute yarn is below.