The National Enquirer is reporting this week that Joel Madden may not be the father of Nicole Richie's unborn child. The mag says there were four men "in Richie's life" when she found out she was pregnant, which sounds way better than "she was getting plugged by a different guy Monday-Thursday." Entertainmentwise.com says:

[The National Enquirer's] 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." (Source)

ichael K over at Dlisted.com is reporting the four lucky guys are current boyfriend Joel Madden, ex-boyfriends DJ AM and Brody Jenner, and--get ready for this--Jeff Goldblum. Richie briefly dated the 54-year-old actor last year after she broke up with DJ AM. By the way, Jeff's 6'5" and Richie is 5'1". One can only hope they made a sex tape. I imagine it would look a lot like a basketball player trying to smother a fifth grader.