PBS Teen's era dress

I'm a docent at a local museum, and the local PBS station asked us to host a Downton Abbey styled evening for some of their top supporters.  I made a new dress for this.  Here's my inspiration

My dress:

antique jet buckle from Ebay

I used three patterns:
1)Simplicity 1517 for the underbodice, underskirt and purple sequin net crossed overskirt.  

2)Then I used Simplicity 9699 for the black top-most overskirt, 

3)and Laughing Moon #104 for the black net dolman sleeve overbodice.