No, I don't buy other sizes. I have "eating clothes" and other clothes. My "eating clothes" are lovely T shirt dresses and other things that either skim my tummy or have elastic waists. My husband brings pants with elastic on the sides after our first cruise--he gained 12 pounds during a 7 day land/sea trip. On the final morning he tried to get dressed in the clothes he had worn to travel down to FL in (all of his other clothes were properly packed and sent on their way at 11 PM the previous night) and found that his pants wouldn't close, by about four inches!!! What to do? Can't leave the ship naked, can't leave the ship in his unmentionables, so he wore his bathing suit, which was still in his day bag! Once we found our bags after we left the ship, he pulled a pair of jeans out and slid them on over his bathing suit.
On our second cruise, he tried his pants on the night before we left!
Beth