Rachel Bilson goes on a lunch date with her mom in Los Angeles on July 18. Credit: X17online

Pulling out all the stops for mom! Pregnant Rachel Bilson looked stunning on Friday, July 18, when she stepped out in Los Angeles for a lunch date with her mom Janice Stango

The O.C. alum, 32, wore a grey, draped skirt, white tank top, and charcoal cardigan with shades and gladiator sandals. 

Bilson is expecting her first child with longtime boyfriend Hayden Christensen, and her growing baby bump was on full display during the outing. 

"Her best friend has a kid, and she has a lot of friends with children, so I'm just there to support her however I can and honor and respect her processes," Bilson's Hart of Dixie star Jamie King told Us Weekly in May. "She loves James, she's always bringing him toys. Just seeing her with my son, I know she's going to be the best mother."