Britney Spears. shocks William Morris Agency

Britney Spears' agents at William Morris have become increasingly frustrated about how to handle America's favorite popstar reports TMZ. According to reports the Morris agency was hawking Spears as a serious actress, but now with baby number two on the way , all their hard work is down the drain.

"Frustration" is a word being used around the offices of William Morris. "It came as a shock," said one insider

"She doesn't need the money. So there's not the usual desperate drive on her part," the source said. "She's constantly changing her mind. One minute she wants to be an actress, the next minute she wants to fly to Maui to record a new album."

A W.M. employee told TMZ: "It seems like she's not sure she knows what she wants to do, which makes being her agent frustrating."

People in the agency are saying that Spears' pregnancy has derailed a lot of plans. Sources say now that Spears is pregnant she's not pursuing her acting career with the same fervor, even scuttling her bid to land the role of a lifetime -- playing Janis Joplin. One source said: "She really wanted to do it but she knows she can't."