The Kardashian sisters take over the headlines with their ever-evolving life changes: Khloé has a quickie marriage with Los Angeles Lakers star Lamar Odom in September; Kourtney welcomes her son Mason on Dec. 14 with Scott Disick; and Kim finds herself busier than ever with her new perfume, endorsement deals (Carl's Jr., QuickTrim) and, of course, her top-rated reality show.
"I am so proud of Reggie and the Saints!" Kardashian tells PEOPLE after Bush and the New Orleans Saints beat the Indianapolis Colts, 31-17, in the Super Bowl. "Reggie has waited his whole life for this moment." In March, though, the pair takes a step back from their relationship.
Fresh off her breakup with Bush, Kardashian moves on with another NFL pro, Dallas Cowboys wide receiver Miles Austin. "He's not quite her boyfriend," a source tells PEOPLE of the pair, adding that Austin "thinks Kim is his dream girl." But the dream ends in September when the romance fizzles.
With Khloé happily married and Kourtney enjoying motherhood, Kim admits that being alone at 30 is a surprise for her. "Is it weird that I'm now the single one? It's definitely a change for me," she confesses in her first PEOPLE cover story. But the recovering romantic isn't giving up on love: "I know I'll find love. I have no fear. When it's meant to be, everything will fall into place." A few weeks later, she continues to play the field, stepping out with Halle Berry's ex Gabriel Aubry and New Jersey Nets forward Kris Humphries.
After just six months of dating, Humphries surprises Kardashian at her Beverly Hills home with a 20.5-carat Lorraine Schwartz diamond sparkler and the message "WILL YOU MARRY ME?" written in red rose petals. "I didn't expect this at all," Kardashian, 30, tells PEOPLE of the 26-year-old NBA star's proposal. "I was in such shock. I never thought it would happen at home, and I never thought now." As for the custom-designed ring, Humphries adds, "I just knew I wanted it to be big."
In a custom-designed Vera Wang gown, Kardashian, 30, marries Humphries, 26, at a private estate in Montecito, Calif., in front of 440 guests and E! cameras, which captured her lavish ceremony for a four-hour TV special.
Shortly after saying she isn't ready to date, Kardashian is linked to Kanye West, who sings about the reality star in his new song "Theraflu." "I admit I fell in love with Kim ... 'Round the same time she fell in love with him," the rapper says, referring to Kardashian's soon-to-be ex Kris Humphries. "Kanye and I have been friends for years...You never know what the future holds," Kardashian coyly says of their relationship on the Today show.
Kardashian joins her family in a revealing sit-down interview with Oprah Winfrey, opening up about her infamous sex tape and the impact it's had on her career. "I think that's how I was definitely introduced to the world," she admits. "It was a negative way, so I felt like I really had to work 10 times harder to get people to see the real me." She also discusses her 72-day marriage and how she found clarity in her new relationship with Kanye West. "I love that I'm with someone who is a couple years older than me," she says.
BIOGRAPHY (top to bottom): ABC; Courtesy of E!; Storms Media Group; Humberto Carreno/Startraks; Denise Truscello /WireImage; Joe Schildhorn/BFAnyc/Sipa; George Burns/Harpo Studios