The actress, who recently landed a leading role in the popular country music series Nashville, kept her look casual for the outing.
The Hart of Dixie star wore ripped boyfriend jeans along with a simple grey t-shirt and a black leather jacket to keep warm in the cool Los Angeles sunshine.
"I'm a really good girlfriend - I always put all that first in my life," said Bilson.
"I'm definitely the person who would make him his favorite dinner to come home to." Bilson and Christensen have been dating off-and-on for six years, and even abruptly called off an engagement in 2010.
The Canadian native wore an over sized beige coat that he kept undone and paired it with a blue Toronto Maples Leafs baseball cap.
Hayden opted for a casual look as well, with light green army pants and a Brooklyn, NYC T-shirt.
But Rachel Bilson, 35, still looked her naturally gorgeous self as she ran errands with husband Hayden Christensen, 35, on Thursday.
The duo made a good looking pair as they both decided to don hats for the occasion.
The couple met while filming the action flick "Jumper" in 2007.
"I love to cook, so we make dinner at home a lot and watch movies," she added, about her boyfriend.
Bilson is often cited for her fashion sense, and explains that she does keep her outfits in mind when it comes to men. "I can never go wrong with a tight dress or a short skirt." "I'm lucky that my boyfriend is open-minded when it comes to fashion," she added.
"There will be an outfit I'm convinced will be too crazy for him and he's like 'That's awesome!
She’s brought in to help Highway 65 and take the record label to a different level. She’s described as “driven and brilliant.” Kaitlyn will be taking on the role of Jessie Caine, a singer/songwriter, who left Nashville after a scandal years back.
Her character returns to the area to continue her career and get her son back.
In this video interview for the movie 90 Minutes in Heaven, Hayden talks about his experience on the movie and getting to know "the" Don Piper in preparation for his role of portraying the Baptist minster.
At the end of the video there is a behind the scenes video of Hayden and Don Piper speaking at the kick-off banquet for the movie.