The most common and most likely answer to this crossword clue is the 4 plus 8 letter word PEER PRESSURE
I've seen this crossword clue in The Daily Telegraph
P
E
E
R
P
R
E
S
S
U
R
E
More clues leading to the result PEER PRESSURE
- How your cohort tries to make you take a close look?
- Feature of competitive classes forever given papers, utterly accepting such
- Upper House journalists regularly quarrel to get influence
- Influence from others to leak reports initially to the media — not quite certain
- Count bars, it's to make sure you conform
- See papers united on ‘Keeping Up Appearances’
Buddy explains!
The straight part
We know that "‘Keeping Up Appearances’" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ‘keeping up appearances’ = peer pressure.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.