Kelly Rutherford and Daniel Giersch

Gossip Girl actress Kelly Rutherford is ending her marriage to German entrepreneur Daniel Giersch after two years, according to legal documents.

In the papers, filed on Dec. 30 in a Los Angeles County superior court and obtained by TMZ, Rutherford cites "irreconcilable differences" as the grounds for calling it quits. Giersch filed for legal separation the same day, People reports.

Rutherford, 40, recently announced that she is pregnant with her and Giersch's second child, which is due in June. Their son, Hermes, is 2 years old.

Rutherford, who plays serial divorcée Lily van der Woodsen on Gossip Girl, ended her first marriage to Carlos Tarajano in 2001 after just five months.