She and her sisters struggled with being perceived as spoiled rich kids: "We did not have a trust fund; we had to have a job.

"[4] In the early 2000s, Foster began her acting career, appearing in Castle, The O.C., House, American Dreams, Gilmore Girls, Reno 911!, CSI: Crime Scene Investigation, Judging Amy, and Roswell.

[7] In 2024, Foster created, wrote and co-produced the Netflix show Nobody Wants This, a romantic comedy series loosely based on her and her husband Simon Tikhman's love story as an inter-faith couple.

It became an international hit, reaching the number one English series on Netflix spot in its second week with 15.9 million views.

[9] It was also a critical success, with review aggregator website Rotten Tomatoes reporting a 95% approval rating, with praise for its cast and writing.

[1] In 2018, Foster began dating investor and music executive Simon Tikhman after meeting at the gym.