Originally Posted by You
I'm not sure if I have already asked this question before, but that was was what I'd planned on wearing one of the fromal night, and then a long skirt/jacket comebo for the next. Am I going to look underdressed?
A black dress shirt and black dress pants would be WAY too underdressed for the "formal" evenings on the majority of cruise lines. The long skirt and jacket combo sounds fine (with a suitable blouse, of course).
There's no reason not to wear the jacket and long skirt on both "formal" evenings. Perhaps you you can coordinate the jacket and skirt with different accessories and different nice blouses of a couple different styles to give the outfit a somewhat different look.