Britney and ex husband Kevin Federline simply hate each other and Britney just could not take the presence of Kevin's girlfriend, ex-volleyball champ Victoria Prince, who l must say is a bit of a hottie. Word is that Spears told Federline that she did not want "that [c-word] anywhere near my kids." The witness also reported that Federline apparently went into some detail. On the other end of the phone line -- telling Spears, "You really don't have much say about that." That was a clear reminder the singer still has limited parental rights when it comes to her sons Sean Preston and Jaden James.

The Monday argument is only the latest in several similar disagreements, but the good news is that "Unlike in [other traumas in] the past, Britney didn't go take a pill or a drink, but went downstairs and did some yoga to calm down. ... I think that's a good sign she's growing up and dealing with Kevin's b.s.," added the source. Check out the pictures of Kevin Federline and Victoria Prince at a bowling alley in L.A. Hey don't you think she looks better than Britney?

(Source: suntimes.com)