Kurt Cobain with daughter Frances Bean Cobain outside of the 10th Annual MTV Video Music Awards on September 2, 1993 in Universal City, California.


Metallica's James Hetfield and his brood attend the Rock and Roll Hall of Fame induction ceremony on April 4, 2009 in Cleveland, Ohio.


Green Day's Billie Joe Armstrong and his son Joseph on April 1, 2006 in Westwood, California.


Red Hot Chili Peppers' Anthony Kiedis hikes with son Everly Bear in Malibu on February 16, 2009.


Gene Simmons with son Nicholas backstage at a Kiss concert on October 17, 1988.


Chris Martin rides with his son Moses in Disneyland on April 3, 2009 in Los Angeles.


Eddie Van Halen with son (and future Van Halen bassist) Wolfgang in the early 1990s.


Dave Grohl spends some quality time with his daughter Violet at the Los Angeles Fair on March 1, 2009.


Gavin Rossdale holds son Kingston Rossdale on September 29, 2008 in Beverly Hills, California.


Joel Madden holds daughter Harlow at the Kidstock Music and Arts Festival on May 31, 2009 in Beverly Hills, California.


Twisted Sister's Dee Snider with son Jesse Blaze Snider in the mid-1980s in New York.


Slash passes the hat to son **** Anthony at Nickelodeon's 2009 Kids' Choice Awards on March 28, 2009 in Westwood, California.


Pete Wentz with son Bronx Mowgli at the A Time for Heroes Celebrity Carnival on June 7, 2009 in Los Angeles, California.


Johnny and June Carter **** hold their son John Carter **** in 1970.


Ozzy Osbourne with son Jack Osbourne on November 18, 1991 in Hollywood, California.


Kate Hudson and ex-husband Chris Robinson walk with son Ryder Robinson on December 9, 2007 in New York City.


T.I and his kids attend the Boston Celtics vs Atlanta Hawks playoff game on April 26, 2008 in Atlanta.


Red Hot Chili Peppers' Flea with daughter Sunny Bebop Balzary.


George Harrison with son Dhani on October 3, 1985 in the Formel One depot at Brands Hatch.


Blink-182 drummer Travis Barker and his daughter Alabama on July 29, 2007 in Los Angeles.


Scott Weiland poses with his son Noah on August 1, 2008 in Hollywood, California.


Frank Zappa plays with his daughter Moon Unit in Laurel Canyon in February of 1968.


Flavor Flav with son Karma at the Coachella Festival on April 19, 2009.


Stevie Wonder carries son Kailand on December 11, 2005 in Washington, D.C.


Rod Stewart and son Liam play football on January 1, 1999 at his house in Essex.


Blink-182's Mark Hoppus and his son Jack Hoppus on June 7, 2009 in Los Angeles.


Perry Farrell poses with his sons and wife, Etty, on March 19, 2009 in Los Angeles.


Paul McCartney arrives at a London airport with his daughter Mary on March 25, 1971.


Chris Cornell holds up his daughter Toni Cornell at an event on October 31, 2005 in New York.


Elvis Presley with his wife Priscilla and daughter Lisa Marie in 1968.


Sean "Diddy" Combs, Kim Porter and their twin daughters D'Lila Star Combs and Jessie James Combs on September 2, 2007 in East Hampton, New York.


Hank Williams with Audrey Williams, Lycretia Williams, and Hank Jr. in 1949 in Nashville.


Christie Brinkley, Billy Joel and daughter Alexa Joel on September 15, 1988 in New York.


Michael Jackson holds his eight-month-old son Prince Michael II over the balcony of the Adlon Hotel November 19, 2002 in Berlin, Germany.


John Lennon and Sean in New York Hit Factory, 1980.