Kate Walsh seen leaving 'Andy Lecompte Salon' . She drives off in her new black Hybrid Escalade. Los Angeles, California, USA - 06.12.08

The couple's troubled relationship was made public earlier this month (Dec08) when 20th Century Fox executive Young began legal proceedings for a divorce, after just 15 months of marriage.

But the star has now filed her own suit, alleging the relationship broke down due to irreconcilable differences on 17 November (08) - five days earlier than the date Young listed.

The pair married in September 2007 in front of more than 100 guests, including several of Walsh's former Grey's Anatomy co-stars.

Source: WENN