Jessica Graf

 was a HouseGuest on Big Brother 19 (US).

Jessica was known for her showmance with Cody Nickson, which ultimately led to her and Cody becoming targets week after week. Jessica was initially put in a state of power with Cody's alliance of showmances, as well as with Christmas Abbott, Paul Abrahamian, and Dominique Cooper. But as she rose to power, she fell just as quickly, with Cody attempting to backdoor Paul and then Christmas, which turned the entire house against them. When Cody was backdoored in week 2, Jessica was left all alone. Despite being nominated in week 3, America tempted her with the halting hex which she accepted, and she managed to survive eviction. When Cody returned to the game, he reunited with Jessica. In week 4, Jessica snagged the HoH win, but her HoH was botched by Paul with ally Ramses Soto being evicted over her target, Josh Martinez. She used her halting hex in week 5 after the house continued to give her and Cody problems, therefore making Paul's HoH a waste. The week after, Jessica was cursed and was stuck as a third nominee, with the house filled with joy she was on the block. When Jessica failed to win PoV she stayed on the block. She was evicted in a 7-1-0 vote, only gaining the vote of Cody to stay. She came in 12th place.

Post Big Brother

 * Jessica and her showmance Cody Nickson competed on the  30th season of the Amazing Race. They ended up winning the season. They are the first BB alumni to win another reality show after competing on Big Brother.
 * Jessica returned to cameo in a musical number in the premiere HOH competition of Celebrity Big Brother 1 (US) alongside former houseguests Rachel Reilly, Jodi Rollins, Paul Abrahamian, Cody Nickson, and Jessie Godderz.
 * On February 14, 2018, TMZ announced that Cody and Jessica were engaged.

Trivia

 * Jessica is the only person to win a competition and be evicted pre-jury in Big Brother 19
 * Jessica is the first person to win the Sequence Explosion POV competition and be evicted pre-jury
 * Jessica, alongside Cody, become the third showmance couple to appear on The Amazing Race.