翻行头

Traditional (Taiwan): 翻行頭

fānxíngtou ㄈㄢ ㄒㄧㄥˊ ˙ㄊㄡ

    • to keep changing into new, fashionable clothes

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
to keep changing one's outfits, like an actor changing stage costumes
Meaning
To keep changing into new, fashionable clothes. Mildly teasing.

Sources