The most common and most likely answer to this crossword clue is the 9 letter word RESTYLING
I've seen this crossword clue in The Daily Telegraph
R
E
S
T
Y
L
I
N
G
Buddy explains!

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.
What does RESTYLING mean?
RESTYLING verb- To refashion something in a new style or shape in order to fit another purpose.
- To give another name, designation or title to something.
- The process or result of styling something again.