DKNY Tweed Dress

I bought this in Hawaii intending to wear it for entrance ceremonies, but it was too big, so I've never worn it. Both the bodice and skirt are fully lined and not see-through, so you can wear it with confidence.
There's a small, about 1mm, white lump of thread-like material in the center of the skirt, possibly from the weaving process. Please check the last photo.
The bust is 49.5 cm when laid flat, and the length is 95 cm measured from the back zipper.