A quartet of stars caught up in conflicts today, as Kobe's accuser fights on, Gloria Estefan braves a scary encounter, Naomi Campbell throws down with her maid, and Rick Fox and Vanessa Williams head for divorce court.

In a blockbuster development in the Kobe Bryant case, the woman accusing the basketball star of rape has now filed a federal civil lawsuit against him. No word yet of how much she's demanding, but her attorneys are seeking at least $75,000, with more damages to be determined. Kobe's criminal trial is supposed to begin later this month.

Gloria Estefan's Sunday night concert in Houston was marred by a man who ambushed the singer onstage. "Extra" has the tape of the incident in which Juan Garcia jumped over barricades and grabbed the pop star. Always the performer, Estefan forced a smile and continued the song. But police are taking the attack very seriously, saying the 37-year-old man assaulted Estefan and charging him with criminal trespass.

Estefan cancelled her Monday night concert, although her camp claimed it was not related to Sunday's incident, citing problems with the computers used in running the show's effects.

Meanwhile, in an even more physical confrontation, one of the world's most famous catwalkers got into a nasty catfight. It seems Naomi Campbell and her housekeeper, Millicent Burton, got into a brawl at the model's New York apartment.

Burton claims Campbell slapped and scratched her so badly that she ended up checking into a hospital. But Campbell's people said, "Miss Campbell vigorously disputes the version of events that is being presented by Miss Burton. It was Miss Burton who precipitated these events, and it is Miss Burton who now appears to be attempting to capitalize on the incident."

And it looks like NBA star Rick Fox and his beautiful wife, Vanessa Williams, who once seemed like the perfect family, are heading for a split. Fox announced today that he's filing for divorce after five years of marriage. The couple has a 4-year-old daughter together. In a statement, Fox said that he and Vanessa are committed to doing what's best for their child.

Fox gave no reason for the split, but a couple of years ago the basketball star spoke to "Extra" about the challenges of balancing family time and a career, saying Vanessa, "Has a career that takes her numerous places and my schedule is set nine months out of the year."