The answers to the two clues below are three-word expressions. The first word of the first expression has four letters. The first word of the second expression has six letters. The two words differ only by the additional two letters in the middle of the second word.

1. Got a bit less dignified.
2. Got a bit more dignified.

Answers:

1. SHED some class
2. SHOWED some class 

Credit: Jack McInturff