<Li> Penny Beesly (Anna Camp) is Pam's sister . She appears in "Niagara", where she is the maid of honor at Pam and Jim's wedding . When Pam introduces her to Oscar and Kevin, she manages to unintentionally offend the former when she mistakes the latter for his ex, Gil . When the ceremony is interrupted by the JK Wedding Entrance Dance recreation, she is apologetic to Pam for allowing it to happen, but Pam encourages her sister to dance down the aisle along with everyone else . </Li> <Dl> <Dd> Camp would later go on to star with Mindy Kaling in her show The Mindy Project . </Dd> </Dl> <Dd> Camp would later go on to star with Mindy Kaling in her show The Mindy Project . </Dd> <Ul> <Li> Sylvia (Peggy Stewart), known as "Meemaw" to her family, is Pam's conservative grandmother, whom Pam describes as the only elderly woman at her wedding "with no smile wrinkles". She first appears in "Niagara", where she travels to Niagara Falls for Jim and Pam's wedding . But, after Jim inadvertently reveals that Pam is pregnant, she refuses to attend, that is until Michael is able to convince her by falsely telling her that Jim and Pam will name their baby after her (or "Sylvio", if it is a boy). She reappears in "Christening", where she attends CeCe's christening . </Li> <Li> Alex (Rich Sommer) is a student at the Pratt Institute in New York City who quickly befriends Pam during her summer internship . The two share a couple of jokes about two of the professors in "Weight Loss". He makes another appearance in "Customer Survey", where he tries to convince Pam to not return to Scranton, but instead stay in New York to pursue her career in art . It is indicated that he is attracted to Pam, and that he views Jim the same way Jim viewed Roy . In an interview with USA Today, Sommer revealed that his character was originally intended to be a potential roadblock for Jim and Pam's relationship, but fan reaction to this storyline was so overwhelmingly negative, that the writers abandoned the idea . </Li> <Li> Isabel Poreba (Kelen Coleman) is a dental hygienist who attends Jim and Pam's wedding as a bridesmaid, where she has sex with Dwight . The night before the wedding, she takes a liking to Dwight when he talks about his farm and the two end up having a one - night stand . She develops a crush on Dwight, which shocks Pam . However, Dwight blows her off on the day of the wedding when she tries to talk to him . In "The Delivery", Isabel visits Pam and Jim in the hospital after Pam gives birth, where they find that Pam had breastfed the wrong baby . Isabel leaves to drop some food at Jim and Pam's house where Dwight is fixing their kitchen . Dwight is surprised and asks if he could come in for a cleaning . In "Happy Hour", she and Dwight start to get to know each other better as the two share similar interests (Isabel's older brothers are police officers or are serving in the USMC). Dwight decides Isabel would be better suited to have his children than Angela, with whom he had entered into a contract to have a child . When Dwight calls off the contract, Angela confronts Dwight and Isabel in the parking lot . Isabel smacks Angela on the head and scares her off . Dwight calls her an "impressive specimen" and passionately kisses her . It is presumed their relationship did not last as she has not been seen or mentioned since then . </Li> </Ul>

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