Jennifer Aniston pregnancy rumours after she steps out with rounded stomach 
 
 COULD Jennifer Aniston be pregnant? 
 
 The 44-year-old star has reportedly had fertility treatment after being engaged to actor Justin Theroux for almost a year. 
 
 Overnight she stepped out at We're the Millers premiere in a tight satin dress that left little room for a small bulge to hide. 
 
 Her representative Stephen Huvane has denied rumours that she is already expecting, but recent reports claim Aniston has started IVF treatment. 
 
 "She definitely seemed to have gained some weight," an eyewitness from the set of Aniston's latest movie Squirrels to the Nuts, which is filming in New York City, told In Touch magazine. 
 
 The source added that the Friends actress is aware of her window of opportunity if she wants to have a baby naturally. 
 
 "She wasn't as chipper as she has been," a witness said about her on-set mood. 
 
 "She knows the clock is ticking - she's well aware of it. She's also done her homework. She's explored all methods for having a baby and knows what her options are with IVF. She's educated herself." 
 
 Apparently Aniston is handling the stress of conceiving well. The source added that Theroux is also growing increasingly broody as time goes on. 
 
 "There is no desperation. If it's meant to be, it's mean to be," the insider finished. 
 
 "Justin didn't always want kids, but his life with Jen changed his perspective on being a dad." ||||| Jennifer Aniston finally addressed rumors that have been haunting her for quite some. 
 
 She is not a nudist. 
 
 "No, we don't walk around nude," Aniston said, talking to pal Chelsea Handler on "Chelsea Lately" Wednesday night, about a tabloid report that fiancé Justin Theroux has converted her to nudism. 
 
 "I mean, we do when it's appropriate," she clarified. "He's comfortable enough in his skin." 
 
 "But no, that's not true. This is absolute B.S. … What are we like, collecting eggs naked and walking around the lawns naked?" 
 
 The blond bombshell also slammed Katie Couric. 'Is she a legitimate journalist?' she asked. (Michael Buckner/Getty Images) 
 
 Handler joked with Aniston that it was difficult being friends with someone so high-profile. 
 
 "Katie Couric was asking me on her show about your wedding and I had to act like I didn't even know you were engaged because I didn't know that was out," Handler said. 
 
 Anison was irritated by this piece of news. "What's Katie Couric?" she asked. "Is she a legitimate journalist? Is she getting tabloid-y? Is she on the 'Today' show?" 
 
 "She was on the 'Today' show," Handler replied. "She got a demotion to her own show." 
 
 Aniston tells Handler she may want to take a trip to Cabo San Lucas, Mexico for her bachelorette party. (Clasos.com / Splash News/Clasos.com / Splash News) 
 
 Aniston, 44, did reveal one new detail about her life with Theroux, 41 — the couple are raising chickens. 
 
 "We inherited them," she said. "We have so many eggs. … People are getting so sick of getting eggs. It's like, 'Here, we didn't bring wine, we brought a carton of eggs'" 
 
 The future Mrs. Theroux also dished about her bachelorette party plans. 
 
 "I would just like to do a little trip to Cabo, or something fun," she said. 
 
 cmonde@nydailynews.com 
 
 MOBILE USERS CLICK HERE TO WATCH ||||| Jennifer Aniston has said that she definitely sees children in her future and it might be time for the Friend to become a mommy with a new report claiming she’s using in-vitro fertilization to get pregnant. 
 
 The 44-year-old star has been engaged for almost a year to hunky Justin Theroux and pictures shows her looking rounder than usual with a possibly baby bump are leading to the speculation that she’s having a baby. 
 
 “She definitely seemed to have gained some weight,” an eyewitness told In Touch magazine about the actress on set of Squirrels to the Nuts in NYC. 
 
 PHOTOS: 26 Extravagant Celebrity Weddings — Were These Nuptials Worth The Millions? 
 
 The magazine says “according to new reports, Jen has begun IVF treatments, and if all goes as planned, she will be pregnant by her 45th birthday on February 11.” 
 
 “She held her script right in front of her stomach.” 
 
 Longing for a baby since divorcing Brad Pitt, who has six children with Angelina Jolie, Jen is apparently showing signs of IVF side effects. 
 
 PHOTOS: Jennifer Aniston & Justin Theroux In NYC 
 
 “She wasn’t as chipper as she has been,” a witness said about her on-set demeanor. 
 
 Jen also is reportedly trying to make sure that she has a healthy baby but is aware that she needs to get moving on having a baby. 
 
 “She knows the clock is ticking – she’s well aware of it. She’s also done her homework. She’s explored all methods for having a baby and knows what her options are with IVF. She’s educated herself.” 
 
 PHOTOS: Jennifer Aniston’s Billowing Dress 
 
 The magazine says that Jen is handling the stress of trying for a baby well. 
 
 “There is no desperation. If it’s meant to be, it’s mean to be.” 
 
 However, her rounder face and tummy hiding tactics are only going to be able to delay an announcement for a little while. 
 
 Her rep says Jen is not pregnant but a source told the magazine that her fiancé is ready for a family too. 
 
 “Justin didn’t always want kids, but his life with Jen changed his perspective on being a dad.” ||||| Jennifer Aniston apparently isn’t friends with Katie Couric. 
 
 Aniston, who appeared on E!’s “Chelsea Lately” on Wednesday to promote her upcoming film, “We’re the Millers,” slammed the veteran newswoman when host Chelsea Handler brought her up. 
 
 “Katie Couric was asking me on her show about your wedding and I had to act like I didn’t even know you were engaged because I didn’t know that was out,” Handler said. “Then she was like, ‘Well, everyone knows about it!’ So, I felt really stupid.” 
 
 Aniston responded, “What’s Katie Couric? Is she a legitimate journalist? Is she getting tabloidy? Wasn’t she on the ‘Today‘ show?” 
 
 “She was on the ‘Today’ show,” quipped Handler. “She got a demotion to her own show.”
– Catfight alert? Appearing on Chelsea Lately Wednesday, Jennifer Aniston mocked Katie Couric, Variety reports. Host (and Aniston bud) Chelsea Handler was talking to Jen about the time Couric asked Handler, during an interview, about Jen's upcoming nuptials. "I had to act like I didn’t even know you were engaged because I didn’t know that was out. Then she was like, ‘Well, everyone knows about it!’ So, I felt really stupid," Handler recalled. Jen's response: "What’s Katie Couric? Is she a legitimate journalist? Is she getting tabloidy? Wasn’t she on the Today show?" Handler then got even cattier: "She was on the Today show. She got a demotion to her own show." Also on the show that night, Aniston shot down rumors that fiance Justin Theroux has turned her into a nudist. "No, we don't walk around nude," she said, according to the New York Daily News. "I mean, we do when it's appropriate." In further Aniston news, her appearance at last night's We're the Millers premiere had some wondering if she's pregnant, Australia's News Network reports. (Check out photos 2-4 in the gallery to decide for yourself.) And Radar does claim she's been getting IVF treatments...