The About Last Night actress was a presenter at Saturday's Independent Spirit Awards and smiled brightly as she walked the red carpet at the Dark Horse Wine-sponsored event wearing a yellow lace Lorena Sarbu minidress, but no wedding ring.
Seated at her table after presenting an award with Jeremy Renner, she was laughing and seemed to be having a good time.
Patton, 38, and her husband of eight years announced their split on Monday. The couple, who have a son, Julian, 3, said in a statement, "We will always love each other and be best friends."
The "Blurred Lines" singer, 36, paid an emotional tribute to Patton during a concert in Washington D.C., on Thursday.
"I want everybody here to know that I'm trying to get my girl back," he told fans before launching into a song he wrote about her, "Lost Without U."
Reporting by MELODY CHIU and JENNIFER GARCIA
The 86th annual Academy Awards, hosted by Ellen DeGeneres, airs Sunday, March 2, at 8:30 p.m. ET on ABC.