浓装艳抹姑娘你爱素颜
[nóng zhuāng yàn mŏ gū niáng nĭ ài sù yán]
This nickname says 'you apply heavy makeup, miss, but you adore your natural beauty'; it refers to someone who wears lots of make-up externally while appreciating her plainness inside. Can be understood differently based on where/how it's utilized too though