It's the 3rd least-solved puzzle in the game so definitely a hard one
- Yes, the second painting's caption relates to the theme of the room.
- The second painting's caption is descriptive of its role in Belly Jeans.
- The number of letters in the two phrases are different, so the broader definition of the phrase rules established in the previous room still apply.
- The order in which you may find it easiest to solve the words is (left to right) 4, 1, 2, 3.
Hope that helps!