Rachel Bilson's Engagement Ring: FIRST LOOK!

After days of covering up her left hand, former O.C. actress Rachel Bilson shows off her engagement ring as she does some grocery shopping at the Mayfair Market in Los Angeles on Monday afternoon (February 23).

JJ previously reported that Rachel, 27, and Hayden Christensen, 27, were engaged over the holidays.

A few times, RB went out without her ring. Other days, she covered up her left hand with her sleeves!

CONGRATS Rachel – the ring is beautiful!

15+ pictures inside of the first look of Rachel Bilson‘s engagement ring…