<Tr> <Th> 88 </Th> <Td> </Td> <Td> "Yes, Then Zero" </Td> <Td> Mark Piznarski </Td> <Td> Joshua Safran </Td> <Td> September 26, 2011 (2011 - 09 - 26) </Td> <Td> 1.37 </Td> </Tr> <Tr> <Td_colspan="7"> <P> While working as a production assistant in Hollywood, Serena makes a mistake while trying to impress her new boss (guest star Michael Michele). Chuck and Nate arrive in Los Angeles to visit Serena where Nate gets involved with a shady older woman (guest star Elizabeth Hurley) and Chuck has a meeting of minds with actress / stuntwoman Zoë Bell (playing herself) as he struggles to get over Blair . Meanwhile, Blair and Louis return to New York from Monaco after spending the summer planning their wedding . Louis' problem in supporting Blair's difficult choices and nearly impossible demands threatens their relationship when she begins to see him as weak . Also, Dan gets help from Louis in a desperate attempt to prevent his book from being published in a local magazine . It is revealed in this episode that Dorota is pregnant and expecting her second child . Towards the end of the episode, it is also hinted that Blair is the one that is pregnant in which Dorota lied for her . As she is fitted for her wedding dress, the dress fitter says that by the time of her wedding she will be showing . Also, Serena runs into Charlie in Los Angeles still unaware of her real identity: Ivy Dickens, who has moved to California with her boyfriend, Max . </P> Title reference: From the 1987 film, Less Than Zero . </Td> </Tr> <P> While working as a production assistant in Hollywood, Serena makes a mistake while trying to impress her new boss (guest star Michael Michele). Chuck and Nate arrive in Los Angeles to visit Serena where Nate gets involved with a shady older woman (guest star Elizabeth Hurley) and Chuck has a meeting of minds with actress / stuntwoman Zoë Bell (playing herself) as he struggles to get over Blair . Meanwhile, Blair and Louis return to New York from Monaco after spending the summer planning their wedding . Louis' problem in supporting Blair's difficult choices and nearly impossible demands threatens their relationship when she begins to see him as weak . Also, Dan gets help from Louis in a desperate attempt to prevent his book from being published in a local magazine . It is revealed in this episode that Dorota is pregnant and expecting her second child . Towards the end of the episode, it is also hinted that Blair is the one that is pregnant in which Dorota lied for her . As she is fitted for her wedding dress, the dress fitter says that by the time of her wedding she will be showing . Also, Serena runs into Charlie in Los Angeles still unaware of her real identity: Ivy Dickens, who has moved to California with her boyfriend, Max . </P> <Tr> <Th> 89 </Th> <Td> </Td> <Td> "Beauty and the Feast" </Td> <Td> Mark Piznarski </Td> <Td> Sara Goodman </Td> <Td> October 3, 2011 (2011 - 10 - 03) </Td> <Td> 1.34 </Td> </Tr>

Who is pregnant on season 5 of gossip girl