She keeps an object in her bra! (6)

I believe the answer is:

brenda

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'her bra' is the definition.
I can't tell whether this definition defines the answer.

'she keeps an object' is the wordplay.
'she' becomes 'brena' ().
'keeps' means one lot of letters goes inside another.
'an object' becomes 'D' (D is an example).
'brena' going around 'd' is 'BRENDA'.

'in' acts as a link.

Can you help me to learn more?

(Another definition for brenda that I've seen is " - - Blethyn, actress".)

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