In 2008, she became both Calvin Klein Jeans newest model and spokeswoman for Coach newest luxury bags.
Because her grandparents suffered fromĀ Alzheimer's disease, the bookĀ Still AliceĀ has had an impact on her. She contacted the author,Ā Lisa Genova, and later landed a co-starring role in theĀ film versionĀ of the book.
She has heterochromia, a condition where the eyes have different colors: she has one blue eye and one eye that is part hazel / part blue.
She had a relationship with actorĀ Orlando BloomĀ from 2002 to 2005.
In mid-2011, she began dating American directorĀ Michael Polish, whom she met earlier that year when he directed her inĀ Big Sur. They announced their engagement in August 2012,Ā and married on August 31, 2013. She became the stepmother to Jasper, Polish's daughter from a previous marriage, whom Bosworth said was āhands-down the greatest unexpected gift of her lifeā. In August 2021, she announced her separation from Polish andĀ were legally divorced in March 2023.
In January 2022, it was reported that she was dating actor Justin Long.Ā In April 2023, the couple announced their engagement and they married in May 2023, less than two months after getting engaged.