"It's hard to watch people change right in front you", the post, which featured a Nishan Panwar quote, read.
22 filing, "This Is Us" star Justin Hartley listed their separation date as July 8, 2019.
Her papers also indicate that she wants Justin to pay her attorney's fees and spousal support, and he does not want to pay either, TMZ reports.
Chrishell also states that she wants to go back to her maiden name, Stause.
The now-exes met through a mutual friend in the soap opera world - he had a role on "The Young and the Restless" while she was on "Days of Our Lives" - and dated for 3 years before he proposed.
Stause shared some photos from the Golden Globes event on November 15, writing in her caption, "Amazing time with this group last night at the @hollywoodreporter @moetchandon Golden Globe party!"