it's like a trainwreck...

Remember when Brit-Brit was starting to go club hopping again after spurting out that second trailer trash offspring? And she started hanging out with Paris Hilton? Who would have thought that six months later Paris would be the one acting like a semi-grown up, and Britney would be the party girl who's own mother thinks K-Fed is better for their kids?

Britney's mom sides with K-Fed over daughter
Britney Spears' mother is feuding with her troubled daughter, and she has an unlikely ally in the battle: her former son-in-law.

The tension began when Lynne Spears took the "Toxic" singer to rehab in February, according to Life & Style, which reports that the singer told her mom: "Say goodbye, mama, because this is the last time you'll ever speak to me."

Lynne Spears hoped to reconcile with her daughter on June 10 when she went to a Beverly Hills party that Britney was also attending. The singer wasn't aware that her mother would be there, however, and "she froze when she saw Lynne," an insider told L&S. "Brit was cordial, but you could've cut the tension with a knife."

Now, the only time that Lynne Spears sees her grandchildren is when Kevin Federline brings them to see her - and she keeps siding with her daughter's estranged husband on issues of custody.

"The Spears family loves Kevin; he lets them see the babies whenever he has them," an insider told the mag. A "pal" also said, "Brit's paranoid that her mom and Kevin are working to take the kids away from her."

Spears has actually contacted a lawyer to cut her mother out of her will, according to L&S. "Lynne is more hurt than anything," an insider told the mag. "She feels she sacrificed everything for Britney."