BEIJING, Aug. 31 (Xinhuanet) -- An attorney for Britney Spears filed a motion to delay a Sept. 17 custody hearing and revealed the pop star's average monthly income is 737,868 U.S. dollars a month, according to court papers obtained by "Access Hollywood."

    The documents, stemming from the couple's Aug. 27 hearing, also show Kevin Federline is receiving 20,000 dollars a month in spousal support. However, that payment ends on Nov. 15.

    The documents also reveal a list of six parties who have been or will be subpoenaed by Federline's camp in his push for custody of the couple's two kids, Sean Preston (23 months) and Jayden James (11 months).

    The list includes Spears’former assistant Shannon Funk, former bodyguard Daimon Shippen, former manager Larry Rudolph, friend Alli Sims, the Promises Treatment Center, Brit's designated sober companion Dr. Betty Wyman and her former nanny Christine Hallet.

    Rudolph was subpoenaed during a visit to a Los Angeles tanning salon on Thursday, a source confirmed to "Access Hollywood."

    Earlier this month, Rudolph phoned "Access Hollywood's" Billy Bush to jokingly say he was on vacation "hiding out from Kevin's processors" after friends told Rudolph that Federline's camp had been looking for him.

    "When I come back, I'm sure they'll find me," he joked to Bush.

    (Agencies)