Katharine McPhee sister Adriana is saying goodbye to her marriage.

Adriana filed for divorce from her husband Edouard Collin.

The pair have been married for 11 years and have two underage kids.

Adriana is divorcing on grounds on irreconcilable differences.

They are both asking to terminate the court’s right to award spousal support.

Adriana and Eduard are seeking joint legal and physical custody of their kids.

The estranged couple listed their date of separation as January, 8, 2022.

The divorce filing comes after Adriana turned 40.

Her special day was celebrated with Katharine throwing her an outdoor party.