A haircut commonly seen worn by black female children in which parts of the hair are separated by hair-bands into multiple stubby, spike-like bunches equivalent in size.
The other day at the laundromat, i saw a rather large black woman with her 3 year-old daughter. The child was dressed in pink shorts, pink sandals, a pink spaghetti-strap shirt, and had a pickinini hairstyle.
A pikinini in Papua New Guinea Tok Pisin is a small child. Clean here is used as a descriptive adjective to mean something that is perfect or cool etc. "Ah clean, clean" is said when Papua New Guineans see something cool or amazing. So Clean Pikinini refers to someone, not necessarily a small child, who does something cool or is cool. The term is used as a compliment.