NFL star Reggie Bush’s new girlfriend Melissa Molinaro could be Kim Kardashian’s twin. But he’s not the first star to find himself dating his ex’s mirror image. From Leonardo DiCaprio’s love of leggy blondes to Bruce Willis’ tendency toward dark haired beauties, see more celebrities whose girlfriends look just like their former companions. Kim Kardashian and New Orleans Saints all-star Reggie Bush had an on-again-off-again romance beginning in 2007. But by the spring of 2010, the Bush and the Tush, as Kardashian’s sisters called them, called it quits for good. While Kardashian has since gotten engaged to New Jersey Nets player Kris Humphries, her footballer ex seemingly hasn’t gotten over her. Bush’s current girlfriend, Canadian-born aspiring pop singer, actress and model Melissa Molinaro could pass for Kardashian. She’s auditioned on multiple talent-TV reality shows and is best known for her starring role in Old Navy’s “Super C-U-T-E” ad. After the ad hit the airwaves and Internet in February, the comparisons to Kardashian came flooding in. Shortly thereafter, Molinaro sent Kardashian a message via E! News: “Kim, I think you’re a beautiful woman, an amazing business woman, and it would be nice to meet you someday! I hope you don’t think all this is weird.” But she may think so now that TMZ reveals that Molinaro has been dating Reggie Bush since Christmas 2010. “Kim knows about her and doesn't care,” a source told Us Weekly of the Molinaro-Kardashian resemblance. Leonardo DiCaprio isn’t only attracted to supermodels—but he’s made a habit of dating women who look eerily similar. He dated Brazilian Gisele Bündchen (with a few breaks) from 2001 to 2005, and then dove into a relationship with Israeli model Bar Refaeli. Since splitting from Refaeli earlier in May, he’s being linked to Gossip Girl star Blake Lively, who recently revealed her Chanel campaign. AP Photo; Getty Images (2) Seven-time Tour de France winner Lance Armstrong has three children with his ex-wife, Kristin, and after their divorce in 2003 began a high-profile relationship with singer Sheryl Crow. When their engagement fizzled out, the cyclist moved on to fashion designer Tory Burch, whose features—down to the perfectly highlighted hair—exactly mirror the other ladies. He then went for blond actress Kate Hudson, before dating and quickly impregnating Anna Hansen, another platinum-haired beauty whom he met through charity work. She’s since had Armstrong’s fifth child. Retna; Getty Images; AP Photo; Getty Images Former boy bander Nick Lachey had a long romance and reality-TV-show career with wife Jessica Simpson, but the newlyweds divorced in 2006. After his three-year relationship with MTV VJ Vanessa Minnillo ended, Lachey was spotted with a new blonde, 23-year-old bartender Holly Letchworth, who looks suspiciously like his ex-wife. Eventually though, in November 2010, he went back to a brunette: he is engaged to Minnillo. AP Photo (2); Fame Pictures Bruce Willis and Demi Moore were married for 13 years, and after their divorce both movie stars moved on to younger love interests. Willis married 31-year-old model (and Demi clone) Emma Heming in March 2009. Getty Images (2); Retna Chris Brown and Rihanna had a seemingly perfect relationship until their domestic violence altercation in February 2009. Then in June, Brown attended Game 5 of the NBA finals with a Rihanna doppelgänger. The look-alike, singer Teyana Taylor, claimed they were just friends and wasn’t flattered by the resemblance. She tweeted, “If one more reporter says that I’m Rihanna, I’m gonna go crazy … I look nothin like Rihanna.” AP Photo (3) Johnny Carson surprised audiences every night on The Tonight Show, but his personal life seemed much more predictable. Carson had a nine-year marriage with second wife, Joanne, and then married another brunette, a former model named Joanna. He joked that he only chose women with similar names to avoid having to change the monograms on his towels. AP Photos (3) Ryan Phillippe and Reese Witherspoon were Hollywood’s quiet young golden couple for nearly 10 years, but when they separated in 2006, many blamed Australian actress Abbie Cornish. Philippe and Cornish met in 2006 on the set of the film Stop-Loss. They remained together until February 2010, and then in November 2010, he was seen with Red Riding Hood star Amanda Seyfried . The two have dated on and (most recently) off ever since. Magician David Blaine has had a mysterious love life. He’s now engaged to a French model (and mother of his child) Alizee Guinochet, but he once dated Josie Maran (also a model) and had a relationship in the late '90s with singer Fiona Apple. AP Photo; Getty Images (2) John Derek was a matinee idol in the 1940s and '50s, but his choice of wives was more memorable than any one project. Derek married future Bond girl Ursula Andress in 1957, and the two were married for nine years. Two years later, he walked down the aisle with future Dynasty star Linda Evans, until the 46-year-old Derek started a relationship with then 16-year-old beauty Bo Derek. The two married in 1976 when Bo turned 18, and remained married for 22 years, until John Derek’s death in 1998. Getty Images (2); AP Photos (2) After she came out in 1997, Ellen DeGeneres had a much-talked-about relationship with Anne Heche for three years. After they split up in 2000, DeGeneres had a multiyear romance with actress Alexandra Hedison, but went back to blonde again with her current high-profile relationship with Arrested Development’s Portia de Rossi, and they were married in August 2008. AP Photo; Getty Images (2) O. J. Simpson married Nicole Brown in 1985, and after the Hall of Fame football star was acquitted of criminal charges related to her murder in 1994, he met then-19-year-old Christie Prody, a blonde who bears a striking resemblance to Nicole. The two were together for 13 years, despite a few domestic disturbances, but Prody now says she fears for her safety if Simpson was ever released from his prison sentence early. Getty Images; Reuters / Landov; Newscom