Strict believer to rear top celebrities (14)

I believe the answer is:

fundamentalist

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'strict' is the definition.
(I've seen this before)

'rear top celebrities' is the wordplay.
'rear' becomes 'fundament' (synonyms).
'top celebrities' becomes 'alist' (the A-list means very famous people).
'fundament'+'alist'='FUNDAMENTALIST'

'believer to' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for fundamentalist that I've seen before include "One obeying very strict doctrines" , "Strict religious zealot" .)

I've seen this clue in The Daily Express.

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