Courtney, 24, visited Marilyn's grave in Los Angeles's Westwood Village Memorial Park with a friend.
The reality TV star, who came to fame when she married 51-year-old actor Doug Hutchison at age 16, showed off her curves in a black two-piece outfit.
Courtney accessorized with platform heels, a large pink hat and held a white Louis Vuitton tote bag.
The 24-year-old was photographed at Marilyn's crypt, which happens to be next to Playboy founder Hugh Hefner, who passed away in September 2017.
As fans know, Marilyn was an actress who became one of the most popular sex symbols of the 1950s and early 1960s. She was a catalyst in changing the world's perception on sexuality.
The star died on August 5, 1962 after overdosing on barbiturates at the age of 36.
What do you think of Courtney visiting Marilyn's grave? Let us know in the comments below.