As blue as; Cassie's Christmas dress

Last up: Cassie! and I made a dress for Cassie for Christmas this year; this is the loose drape tank-top from drape drape by Hisako Sato.  I used a thin cotton jersey, printed in an interesting fractured pixels design of ocean blue upon powder blue.  I bought the fabric from the Fabric Store in Melbourne during our trip there in September.
I think the tank-top is designed to just be a summer cover-up, the only explanation for its skimpiness and bra-revealing nature; so I also made a matching little tank top; that is, the regular kind of tank top! to go under it, just in case Cassie decided she wanted to wear it anywhere other than the beach.  I based the shape of the tank top on a well-fitting Tshirt that she owns already.
For the drape drape tank-top; I edged the neckline and both of those big big armholes with a cross-cut strip of the jersey, attached right-side to wrong side on the inside, and then flipped out to the right side of the dress and stitched down on the outside; so the raw edge rolls up on itself and over the stitching.  I can go into more details of this finish with a pictorial tute, if anyone is interested... ?  Looks quite nice and kinda cute, and is appropriate for a casual little summery thing, I think.
The regular tank-top neckline and armhole edges are just finished by turning under a narrow hem twice and top-stitching on the inside face.
The lower edge of both pieces are finished with a hem, turned under twice and top-stitched.