Kardashian Sisters Fever Chart

It's probably more of a rhetorical question by now: Why, exactly, are the Kardashian sisters famous?

Truly, if Kim Kardashian weren't the offspring of the late O.J. Simpson attorney, Robert Kardashian, would anyone have noticed or cared when her sex tape with Ray-J surfaced? Probably not.

No matter. Once America embraced Kim and the rest of the Kardashian Klan through their reality show, there was no turning back. Now, her sisters are getting their turn in the spotlight. Kourtney and Khloe Take Miami premieres at 10 p.m. Sunday on E!, so it seems like a good time to subject the gorgeous Armenian beauties to a Film.com Fever Chart, which charts the highs and lows of our favorite celebrities.

american idol photosSee pictures of the Kardashian sisters!

Editor's note: Join Kourtney and Khloe live for a series-premiere Twitter viewing party on Aug. 16 at eonline.com. See what other fans have to say about the show and share your own reactions!

Keeping Up With the Kardashians premieres on E!, showcasing Kim and introducing Khloe, Kourtney and a bunch of other kids whose names begin with K, as well as mother, Kris. Kool! Temperature: 98.6 degrees.

Khloe gets a DUI. With four million siblings and step-siblings, you think she could have called a family member -- or a cab. Temperature: 31 degrees.

Kim's goods had already been on display in the sex tape, so posing for Playboy in December 2007 seemed like a step up on the scale of classiness. She accessorizes with big, bold jewelry. Temperature: 112 degrees.

The sisters, Kris and step-father/plastic surgery experiment Bruce Jenner compete against Deion Sanders and kin on Celebrity Family Feud. Survey says: They got creamed by 299 points. Temperature: 40 degrees.

Khloe serves three hours of a 30-day jail sentence on her DUI charge before being released due to overcrowding in jail. Being a sorta-celebrity has its sorta-perks. Temperature: 88 degrees.

With past and present eyesore contestants like Cloris Leachman and Steve Wozniak, Dancing With the Stars scores kutie-pie Kim as a contestant on the show. We were stoked -- that is, until she actually danced. It made the Family Feud appearance seem like a successful audition for MENSA. Temperature: 26 degrees.

Khloe joins the ranks of Pamela Anderson, Alicia Silverstone and Dennis Rodman, posing nude for one of PETA's "I'd rather go naked than wear fur" ads. That's not bad company to keep for someone who rode her sister's coattails to fame. And she looks really good doing it, too. Temperature: 124 degrees.

Kim's role in Disaster Movie earns her a nomination for a 2009 Razzie Award. Perhaps she should stick to modeling. Temperature: 10 degrees.

Tired of his alleged philandering, flirtatious and hard-partying ways, Kourtney breaks off her engagement to Scott Disick. It was bound to happen before her move to sexy Miami, anyway. You don't take sand to the beach, ya dig? Temperature: 112 degrees.

Khloe gets fired from The Celebrity Apprentice after Donald Trump finds out about her year-old DUI, even though other celebs had performed much worse than her. Temperature: 13 degrees.

The sisters' new Miami store, Dash, gets hit with graffiti just before its opening. The following day, the L.A. Dash store was defaced with a scrawled message that read, "We love you Kim." So, the first was just a tag, while the latter seemed like a shy, loving gesture (like when a boy kicks you in the shins at recess because he has a crush on you). Cold + hot = lukewarm. Temperature: 65 degrees.

Ads for the sisters' new show begin to air, showing, among other things, Kourtney making out with another girl in the bar, which might be the most interesting thing she's done onscreen to date. Sex sells! Temperature: 135 degrees.

The three sisters use their lovely smiles to endorse a tooth-whitening pen called "Idol White." Khloe says: "I hate going to the dentist. Absolutely hate it. Having a teeth whitening product I can apply at home means everything to me." Hopefully, she still gets her teeth cleaned. Temperature: 90 degrees.

While Kim's relationship with Reggie Bush seemed fairly durable, the duo call it quits in July. We're sure that A) Kim will bounce back, and B) that she'll be getting tons more attention in magazines in tabloids, who will speculate on her relationship status every time she's seen within five feet of a man. Temperature: 136 degrees.

Kourtney reveals she is pregnant with her first child, due around Christmas time. Lucky for her, she still has plenty of time to pick out more names that start with K -- and this will definitely up her popularity with paparazzi. Get ready to see Kourtney baby bump pictures in all the tabloids. Kongrats! Temperature: 99 degrees.