keep up with the Joneses

Etymology
Various theories; see Wikipedia article.

Verb

 * 1)  To act or make purchases for status or image rather than out of need, especially for the purpose of competing with friends, neighbors, or society.

Translations

 * Chinese:
 * Mandarin: 爭相攀比,, 互相攀比
 * Finnish: olla mukana elintasokilpailussa
 * Tày: bì
 * Vietnamese: