Lauren Katherine Conrad (born February 1, 1986) is a television personality, particularly well known for her work on the MTV reality series Laguna Beach and its spin-off, The Hills; Conrad left the latter after five seasons.
She guest stars as herself in an animated Laguna Beach in "Prick Up Your Ears".
Lauren provides her own voice again in "We Love You, Conrad" while the Griffin family watches an episode of The Hills. Later in the episode, Brian gets drunk at a bar after meeting his ex-girlfriend Jillian Russell's fiancé over dinner. As he is very intoxicated at the time, he does not recognize Lauren as the star she is, calling her 'blondie'. They hit it off soon after meeting, and after Brian cracks a few lame jokes, Lauren laughs and says that he reminds her of her stepdad. They then make out, and wind up in a hotel room bed. Brian wakes up and sobers finally realizing who she is upon awakening. Despite numerous jokes from the media, the two start to date.
Additionally in this episode, she is portrayed as the exact opposite of her Hills personality, being very intellectual and more into philosophy and science than into clothes and magazines. She was so smart in fact she often corrects other people's statements. Brian is ill at ease with dating a woman smarter than himself, while Lois does not warm to Lauren; telling her over a dinner with the family that one-upping her was unacceptable at a dinner table. At the end of the episode, he reaffirms his love for Jillian at the wedding, as advised by Conrad. Brian reveals at the reception that the relationship was probably over with Lauren as well, because he had given her worms.
In "Valentine's Day in Quahog", Stewie gathers scores of Brian’s former girlfriends, including Lauren, to get to the bottom of why he’s unsuccessful in love. When he lashes back at their criticism, he notes that Lauren made a decision to be on The Hills.