Rachel Bilson And Baby!

The O.C. starlet is flashing her engagement ring again, and not only that - it looks like she's really loving that kid!

Rach was visiting friends in WeHo over the weekend, one of which had an adorable baby boy that really took to the brunette beauty. Hmm, can you picture her and Hayden Christensen having kids anytime soon? You know they'd be sooo attractive!