LAS VEGAS: Britney Spears is in a bad place…. again. The singer is caving under the pressure of headlining her own Las Vegas residency, according to a new report. “There is little chance that she can actually do this,” a source said. “The stress of a daily public appearance and the physical nature of a show could overwhelm her for sure. As the show comes closer, she may start to fall apart. It’s definitely a concern.” Recent reports claimed the troubled star is keen to tie the knot and start a family.–SS