Rachel Bilson Takes a Birthday Walk with Hayden Christensen

Rachel Bilson wears a loose fitting dress to cover up her baby bump while taking an afternoon walk along a trail on Monday afternoon (August 25) in Ventura, Calif.

The pregnant Hart of Dixie star, who was joined on the outing by her boyfriend Hayden Christensen, turned 33 years old that day.

Happy birthday, Rachel! We hope you had a great day!

PHOTOS: Check out the latest pics of Rachel Bilson

The day before, Rachel and Hayden were spotted heading to a hotel together while enjoying their babymoon before her upcoming due date.