Rest in peace, Penny Marshall. Today, the world is mourning the loss of the beloved Laverne & Shirley star who sadly died at age 75 in her Hollywood Hills, CA home on Monday, Dec. 17. “Our family is heartbroken over the passing of Penny Marshall,” the Marshall family said in a statement to Closer Weekly following her death from complications of diabetes.

After the news of Penny’s passing was revealed, many of the actress’ famous friends and fans took to social media to pay tribute to the late star. Scroll down to read celebrities’ emotional reactions to Penny’s death.