Heads to Italy and requisitions a string of headdresses (6)

I believe the answer is:

tiaras

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'headdresses' is the definition.
(tiara is a kind of headdress)

'heads to italy and requisitions a string' is the wordplay.
'heads' says to take the initial letters.
'string' becomes 's' (this could be a standard abbreviation I've not previously seen).
The initial letters of 'to italy and requisitions' is 'tiar'.
'tiar'+'a'+'s'='TIARAS'

'of' acts as a link.

Can you help me to learn more?

(Other definitions for tiaras that I've seen before include "Jewelled headdresses" , "Headbands" , "Jewelled crowns for women" .)

I've seen this clue in The Irish Times.

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