PURPLE AND BLACK, OR, IS THIS A TRENCH COAT OR A DRESS?

Good morning Knuckles!

Here's something I rarely wear because... well what is it?  It's neither a trench coat nor a dress.  It has short cap sleeves making it impractical as a jacket, but the fabric is rather too stiff to wear as a summer dress.  Hence, I bought this from the Macy's at Herald Square years ago but have only worn it once, to Mass with my in-laws.

(Holy feathered hair, Batman!  Sunnies, YSL; hat, American Apparel; dress, Plastic Island; shirt, J.Crew; boots, Miu Miu; bag, Elliott Lucca; gloves, Alfani; necklace, Francesca's Collections)

I think if I turn this dress into something more fall-like, I will wear it more often.  What do you think of adding black puffed leather sleeves?  I think the black and purple look nice together...

Mr. Brass Knuckles is normally very appreciative of my get-ups, but this one so deeply reminded him of 3 childhood icons that he couldn't help but make the comparison:

(If you know the names of all three Congratulations! You have great memory).

Have a great week, Knuckles!  Let me know if you have any mysteries to solve, people to spy on, or crimes to mastermind! OMG I am such a dork.