Celebslam has done some interesting under cover work revealing the most interesting secrets about Hollywoods children... (Source has more details on each story)

10. Reese Witherspoon
Reese's brother was arrested for sexual battery
On October 5, 2002, Reese Witherspoon's older brother, John, was arrested after he entered a Nashville neighbor's home and tried to undress and kiss a woman while she slept.

9. Gavin Rossdale
Gavin had a secret love child

In 2004, Gwen Stefani and Gavin Rossdale, 42, were happily married and planning for a baby. But that October, Gwen got shocking news -- Gavin's 15-year-old goddaughter was actually his love child with former flame Pearl Lowe.

8. Michelle Williams
Michelle's dad faces tax evasion charges

Michelle Williams has been estranged from her father, Larry, since she was 15, but she's still upset that the IRS charged the 64-year-old stock market trader with evading $1.5 million in taxes after he flew to Australia.

7. Woody Harrelson
Woody's father was a convicted hit man

Woody Harrelson was only 7-years-old when his father, Charles, killed a Texas businessman and was put in jail.

6. Sara Evans
Sara claimed her husband had kinky desires

When country singer Sara Evans' marriage to Craig Schelske fell apart last year, she aired his dirty laundry in court papers.

5. Tobey Maquire
Tobey's dad was a bank robber

When Tobey was 18, his down-on-his-luck dad, Vincent, a cook, robbed a California bank and served two years in prison.

4. Orlando Bloom
Orlando didn't know who his real dad was

Growing up in Canterbury, Kent, England, Orlando Bloom believed that author and civil rights activist Harry Bloom was his father.

3. Halle Berry
Halle's dad was abusive

"He abused my mother and my sister Heidi constantly," she admits. Although she wasn't harmed, "I was dealing with a lot of guilt," Halle, 41, says.

2. Charlize Theron
Charlize's mom killed her father

On June 21, 1991, Charlize Theron's dad returned to their South African home after a long night of drinking.

1. Nicole Richie
Nicole's real dad was in Lionel's band

Nicole Richie has always known Lionel and Brenda Richie as her mom and dad. But her real parents were actually members of Lionel's band, who gave her up when she was 3-years-old.