The most common and most likely answer to this crossword clue is the 8 letter word MEGASTAR
I've seen this crossword clue in Independent
M
E
G
A
S
T
A
R
More clues leading to the result MEGASTAR
- End of film remade as great for great celebrity
- Margaret, a very good type, a right “superperson”
- A-lister seen principally in Margate, surprisingly
- Big celebrity gets Mara excited
- . Huge celebrity mates rag to get into shape
- Cruise for one mile, say, like sailor
- 11, perhaps, fixed games with sailor
- Legend of rodents’ decline maybe originally rejected
- Flipping rotter is a shining example for major celeb
- Jack played games making the introduction for major celeb
Buddy explains!

The straight part
We know that "Famous figure" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case famous figure = megastar.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 MEGASTAR mean?
MEGASTAR noun- A very famous or successful celebrity.