Jessica Simpson’s is-she-or-isn’t-she belly has taken over many tabloids and gossip sites. But this isn’t the first time—for her and many other female celebrities—that pregnancy rumors have caused a fury. From Jennifer Aniston to Beyoncé, see more stars constantly on bump watch. Well, the cat is finally out of the bag: Jessica Simpson is pregnant. It only took OK magazine $500,000 to confirm what everyone else had been convinced about for months. Simpson’s growing belly had mags and blogs in a frenzy over whether she and fiancé Eric Johnson were expecting. They were right—this time. Jess has been the subject of pregnancy rumors before. Back in November 2010, the tabloids proclaimed the only plausible reason for Simpson and Johnson’s fast engagement was that she had a bun in the oven. Of course, her fluctuating weight didn’t help to quell these rumors.Then OK magazine even went so far as to “confirm” the baby-bump speculation. Back in 2008, Simpson was also said to be carrying then-boyfriend Tony Romo’s baby. But, alas, this rumor, like many before it, was just that. CWNY / Fame Pictures Poor Jennifer Aniston. While her ex-husband and globe-trotting Angelina Jolie pick up a new child on every continent, Jen is faced with the constant reminder that she has no kids. Just when she’s convinced the media that she and whomever she’s dating at the time are not expecting a baby, she starts dating someone else and the rumors return—like a neverending game of whack-a-mole. Even when she’s not dating anyone, Aniston’s still reportedly trying to get knocked up. To date, though, the actress has never announced a pregnancy. Jason Merritt / Getty Images Mariah Carey and Nick Cannon got engaged in 2008, sparking two years of rumors until they actually got pregnant. Not long after the engagement announcement, Ellen DeGeneres tried to out Mariah, offering her Champagne and then proclaiming “you’re pregnant” when she refused to drink it. Mimi insisted, “I only drink after 3 p.m.,” which is fair enough, but a year later the rumor mill was at it again, speculating that the singer’s weight gain could only mean one thing. Jason Merritt / Getty Images This mother of six has sparked much speculation about whether and when she’ll be expanding her already large family. If the typically svelte actress puts on even a little weight, rumors swirl. Star magazine announced outright in 2009 that Angelina was expecting baby No. 7—a declaration that was, of course, completely unfounded. Most recently, Jolie attempted to set the record straight in an interview with Vanity Fair in which she insisted she’s not getting married to Brad Pitt, she’s not pregnant, and she’s not adopting a baby right now. AP Photo Beyoncé’s pregnancy rumors started even before she and Jay-Z were married. But ever since their low-profile wedding, America has been wondering when hip-hop’s royal couple would finally procreate. Despite speculation, the two weren’t ready to become parents in 2008, or in 2010. Unfortunately for B, however, getting pregnant for real hardly puts the rumors to rest. This month, the pop star was accused of wearing a fake baby bump—she wasn’t. Slaven Vlasic / Getty Images Jennifer Lopez has two children—twins—which means she has officially been pregnant once. However, she’s been at the center of many a pregnancy rumor before and since the birth of her children. In 2006, Hollywood was abuzz over whether J. Lo was preggers—an idea that was only fueled further by the singer/actress telling a friend that her breasts were growing. In 2009, Lopez was spotted sporting a very obvious baby bump but, to the blogosphere’s chagrin, her belly wasn’t real—just a prop for her latest movie. Stephen Lovekin / Getty Images Pop princess Britney Spears shocked Hollywood with two pregnancies in a row in 2005 and 2006. Ever since then, magazines have stirred up rumors every now and then that baby No. 3 is on the way. Most recently, Life & Style magazine reported—without confirmation—that Spears was with child. So far, though, it’s still just two babies for Britney. AP Photo Kim Kardashian became a household name when her family’s reality-TV series premiered in 2007. Kim made clear her desire to get married and start a family and the tabloids went wild, reporting frequently that the middle Kardashian sister was having a baby with then-boyfriend Reggie Bush. Last year, Kim quickly quashed a rumor that she’d been knocked up by friend Kanye West. Of course, now that Kim is married, the curiosity over whether she and hubby Kris Humphreys are expecting has only ballooned. But just two months after their wedding, the couple insists there is no baby on the way. David Livingston / Getty Images Whether she’s wearing a loose-fitting dress, ordering half a dozen organic baby blankets, or simply wearing a particularly unflattering outfit, Katie Holmes is constantly fueling rumors that she’s got a baby on the way. But although US magazine put Tom Cruise’s wife on its cover earlier this year proclaiming: “Yes, I’m pregnant!” Suri looks poised to remain an only child, at least for now. Matthew King / Getty Images Christina Aguilera’s weight fluctuates often—which is not good for warding off pregnancy rumors. OK magazine noted the singer really filled out her Burlesque costume during a performance at the American Music Awards in 2010 and wondered if her belly had a baby in it. Taking the stage at this year’s Grammy Awards, Aguilera’s full figure fueled even more pregnancy rumors. But while she may not have looked her thinnest at the ceremony, Christina insisted that she was not, in fact, expecting. Toby Canham / Getty Images