She black too
Purple Label on her back,

from Kendrick Lamar – A.D.H.D Lyrics on Rap Genius

Meaning

Kendrick is introducing the girl he converses with in verse 2.

“Purple Label” is either the Ralph Lauren Purple Label clothing line or Purple Label, a company that makes belts and handbags, OR The North Face purple label backpacks.

There is so much purple swag these days.

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