Meaning
To dress stylishly and show off your style — to 'style up' yourself is to fix up sharp, wear the latest fashion, and cut a fine figure. It puts the accent on flair and being seen to be fashionable, and a person who 'style up' is dressed to impress. 'Stylin' is carrying yourself with that same self-conscious flair.
Examples
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She style up fi di photo shoot.
She dressed up stylishly for the photo shoot.
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Him love fi style up an floss.
He loves to dress sharp and show off.
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Everybody style up fi di dance.
Everybody dressed up in style for the dance.
Origin
From 'style' + 'up'; to dress stylishly/show off style. See [[dress-off]], [[boasty]].
How it’s used
To dress stylishly / show off flair. See [[dress-off]], [[boasty]], [[criss]].