Change this for the right top (6)

I believe the answer is:

tshirt

'top' is the definition.
(I know that Tshirt is a type of top)

'change this for the right' is the wordplay.
'change' indicates anagramming the letters.
'for' means one lot of letters go next to another.
'the right' becomes 'rt' (abbreviation as in Rt Hon- the Right Honourable).
'this' with letters rearranged gives 'tshi'.
'tshi'+'rt'='TSHIRT'

I've seen this clue in The Irish Independent.

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