If you are concerned about having enough space in your luggage at the departing or returning leg of your flights or cruise, or perhaps travel via another method, consider this:
Do not forget that you can get laundry service on cruises, albeit at high prices. On select days, a discount may be offered for laundry service. So if you are fretting over squeezing in the last one or two outfits, you may wish to use laundry service. For a short cruise you would not need as much clothing of course and may not need to wash your clothing.
Yes, you can wash your under clothing perhaps in your cruise cabin's bathroom but blouses, skirts, dresses, and so on may be better washed by the laundry staff. You can buy expandable hanging cords with clips to hang your clothing onto for drying.
Some people save up and bring some clean "worn out" under clothing that you would not want to donate and simply discard them after wearing during the cruise, freeing up space for the return trip. That may sound ridiculous but it is a tip shared among cruise travelers. This can free up space for souvenirs, gifts, or other purchases you wish to bring home.
As always, try to bring the basics, with multiple outfits that could be selected by using different combinations of items.