The most common and most likely answer to this crossword clue is the 10 letter word LUMINARIES
I've seen this crossword clue in The Daily Telegraph
L
U
M
I
N
A
R
I
E
S
Buddy explains!

The straight part
We know that "More than one celebrity" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case more than one celebrity = luminaries.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 LUMINARIES mean?
LUMINARIES noun- One who is an inspiration to others; one who has achieved success in their chosen field; a leading light.
- A body that gives light; especially, one of the heavenly bodies.
- An artificial light; an illumination.