Bare all in dancing? Not this dancer (9)

I believe the answer is:

ballerina

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'not this dancer' is the definition.
'ballerina' can be an answer for 'dancer' (ballerina is a kind of dancer). I'm unsure of the remainder of the definition.

'bare all in dancing?' is the wordplay.
'dancing?' is an anagram indicator.
'bare'+'all'+'in'='bareallin'
'bareallin' is an anagram of 'BALLERINA'.

Can you help me to learn more?

(Other definitions for ballerina that I've seen before include "Pavlova?" , "girl on point duty" , "Danseuse" , "She's a classical dancer" , "agile performer" .)

I've seen this clue in The Telegraph.

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