These are the multiple versions of the Lead Singer Variant of the Captain America USO Dancing Girls. They all have the blue/white skirts with blue trimmed petticoats, but they also various changes of lapels and hats. I did the one with the Blue Bodice and the 'A' helmet.

*Version 1 - Red Satin Lapels and Red/White Stripe Hat
You see this version during the war bond scenes in the beginning.

*Version 2 - Red sequin lapels, sequin bolero top, and "A" helmet
You see this version sitting atop the motorcycle during the big NYC Dance number.  I think this is my favorite version because of the bolero top.  It's so cute and balances out the whole costume really nicely.  I drafted my pattern for this using the stretch hologram blue sequins to coordinate with the hologram red sequin lapels.  The whole thing is lined in a blue swimsuit type lycra to stretch with the sequins.  The bolero snaps onto the dress bodice at the neck to keep it from shifting.  The Lapels then snap to the bolero mid way up and at the point.
The Helmet was an unissued Danish helmet from the 1960's.  It was originally molded off the American helmets from what I read.  It came with a liner as well.  I used Rustoleum to paint the whole helmet and finished it with a clear matte spray.  The "A" was stenciled free hand and then painted with regular white acryllic paint.

*Version 3 -  Red Satin Lapels and Helmet
You see this version overseas when Cap is doing his speeches to the troops.  Cap later borrows the dancer's helmet when he goes on his rescue mission.