Most people make sure to protect their valuable assets bypurchasing insurance—and celebrities are no exception. Formany celebrities, their most valuable assets are their bodies.That's where body-parts insurance comes in.

There are three types of body-partsinsurance: insuring a physical attribute that drives earningpower, such as a singer's voice; athleteswho require coverage for a body part excluded from theirdisability insurance; and in some cases, a celebrity insures a bodypart purely for the media exposure.

From star athletes to movie stars, NU hasassembled a partial list of celebs who have had their body partsinsured. Click “next” to see the list.

Ben Turpin, a silent-movie star famous for his crossed eyes,could be the man who started the celebrity-insurance fad: In the1920s he took out a $20,000 policy against hiseyes uncrossing.

Betty Grable was the girl with the “million-dollar legs.” Theactress, singer and dancer was said to have the most beautiful legsin Hollywood—and her studio had them insured for $1 million.Grable's iconic bathing suit photo (pictured here) made her thenumber-one pin-up girl in 1943.

Photo by Frank Powolny

Baseball player Mark McGwire had his problematic ankle insuredin 1998 during his epic 70-home-run season with the St. LouisCardinals. Medical details, including how the ankle was strappedand any anti-inflammatory medications taken, were reviewed beforeLloyd's of London agreed to underwriter the policy.

(AP Photo/John Gaps III)

In 2004, supermodel Heidi Klum, host of “Project Runway,” hadher legs insured by a client for $2.2 million. While Klum's rightleg was deemed to be worth $1.2 million, her left leg was valued atslightly less ($1 million) due to a scar.

(AP Photo/Matt Sayles)

David Beckham, the English soccer star, had his legs insured in2006 for a whopping $70 million. Beckham currently plays for theLos Angeles Galaxy.

(AP Photo/Gus Ruelas)

Singer Mariah Carey insured her legs for $1 billion in 2006after agreeing to take part in Gillette's “Legs Of A Goddess”campaign.

(AP Photo/Chris Pizzello, File)

America Ferrara, former star of “Ugly Betty,” had her teethinsured for $10 million in 2007—sponsored by Aquafresh when theactress began endorsing Aquafresh White Trays.

(AP Photo/Evan Agostini, file)

Troy Polamalu, safety for the Pittsburgh Steelers, had his famedhead of hair insured last year for $1 million through Lloyd's ofLondon. The football player is the featured spokesman for Head& Shoulders shampoo.

(AP Photo/Gene Puskar, File)

Holly Madison, who gained fame as one of “The Girls Next Door,”in September announced she had insured her breasts for $1 millionwith Lloyd's of London. Madison is currently starring in the LasVegas production “Peepshow,” where she appears topless.

(AP Photo/Joe Coomber)