TArmstrong031511_11_div2.jpgTaylor Armstrong is finally calling it quits with hubby Russell after six years of marriage and a reality show season filled with marital woes broadcast on national TV.

The Real Housewives of Beverly Hills star filed for divorce from her venture capitalist husband, citing irreconcilable differences. The couple have a 5-year-old daughter, Kennedy, and Armstrong is asking for joint legal custody, spousal and child support.

Back in early May, Armstrong's rep confirmed, amid break-up rumors, Taylor and Russell were NOT splitting. And in fact, an X17 reporter even saw the couple out at a romantic dinner.

But apparently all was not well and the pair's constant head-butting will finally come to an end ...