Who is the father?

A report is set to reveal that Joel Madden may not be the father of Nicole Richie’s unborn child. The National Enquirer claim's that there were four men in Nicole’s life before she found out that she was pregnant. Their report says that Nicole will not know for sure who fathered her child until the potential baby-daddies
undergo paternity tests. A source tells the Enquirer:

“Nicole recently underwent a series of tests, including blood and urine screenings,
which confirmed she is pregnant.”

Though she is yet to officially confirm the pregnancy, Nicole
has been busy shopping for baby products in recent weeks.

Nicole has been with Steve-o, Brody Jenner and DJ A.M... I'm hoping its stevo-o's.