The brunette beauty let her highlighted locks sweep down in elegant waves while her Canadian ex sported a black baseball cap and jeans.
But then they rebounded with each other, basically, and reconciled three months later.
Bilson, 36, gave birth to their daughter, Briar Rose, in October 2014, whose name is a nod to the former couple's love of Disney.
They ended up getting engaged in December of 2008 only to call it off in August of 2010.
After taking a short break, the couple got back together at the end of 2010, and they eventually welcomed their daughter, Briar Rose Christensen, into the world in October of 2014."They will be on good terms because they have to be for Briar," the first source told E! "Rachel is very close with Hayden's family and has spent a lot of time with them in Canada and Barbados.
A source told Us Weekly on Monday that Emma Roberts 'was at the center' of Christensen and Bilson's split.
A source previously told the site of their split: 'She’s full-time back in LA.The Canadian actor showed off his muscular calves in a pair of tall grey socks worn with Velcro black trainers.Little Briar appeared to be reaching for her mother as the two parted ways.She felt like she wanted something different and easier.She tried to make it work for years but just got tired of this being her life.""They've been on the outs for a couple of months," another source told during which they first sparked romance rumors.Rachel Bilson is reportedly single again after splitting from her partner of nine years, actor Hayden Christensen. Get the details on her short but sweet dating history — seriously, this will only take you like 10 minutes to read.