MarycraftsWomen's Formal Office Business Work Jacket Skirt Suit Set

I recently purchased the jacket suit set in dar blue for my daughter.  she loves the suit so much i was wondering if i could get suit pants to match?

Is the skirt and jacket lined?

My latest [tommy hilfiger] dress is a 16 and it is just a little loose. my stomach/waist is big. should i get a 16 or 18 as amazon suggests?

I the style of this suit. I am 5'8 38 chest 42 hip and weight 205lb. What size do you suggest