Girl in centre is some looker! (4)

I believe the answer is:

iris

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This clue could be a double definition.

'girl in centre' is the first definition.
'Iris' can be an answer for 'girl' (girl's name). I am unsure of the 'in centre' bit.

'is some looker' is the second definition.
(bit of the eye - thing that looks)

Can you help me to learn more?

(Other definitions for iris that I've seen before include "Plant - part of the eye" , "Nice flower or eye part" , "bit of a looker" , "One controlling pupil' s reactions" , "Flag or flower in the eye" .)

I've seen this clue in The Sun.

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