Melissa Rivers, Joan Rivers Melissa Rivers, Joan Rivers

As Melissa Rivers and her son Cooper prepare to spend their first holiday season without their mother and grandmother, Joan Rivers, it's clear the legendary comedienne is not far from their minds.

On Thanksgiving, Melissa Rivers tweeted a throwback photo of herself and her mother via Joan Rivers' Twitter account, which has not been used since August. Rivers went into cardiac arrest during a procedure on her throat on August 28 and died a week later, on Sept. 4.

Joan Rivers dies at 81

"I finally figured out my mom's password HAPPY THANKSGIVING! Xo Melissa," the younger Rivers posted Thursday.

blockquote class="twitter-tweet" lang="en">

I finally figured out my mom's password HAPPY THANKSGIVING! Xo Melissa. pic.twitter.com/giTnL2qwnO

— Joan Rivers (@Joan_Rivers) November 27, 2014

Joan and Melissa Rivers were frequent co-hosts on the red carpets of award shows. Joan Rivers reportedly left more than $100 million to her daughter when she died, and Melissa Rivers is reportedly considering filing a lawsuit against the clinic where her mother was undergoing the surgery when she died.