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Britney's court-appointed attorney, Samuel Ingham told LA Superior Court commissioner Reva Goetz today, during a 90-minute hearing, that he believes Spears is "not yet fit" to participate in the legal proceedings regarding her father's conservatorship over his daughter's estate.

Ingham said Britney's medical condition is "fluid" because of her ever-changing treatment, according to an Associated Press report.

The wire service also states that Brit's attorney said it could be "harmful" for the Queen B to participate in her July 31 probate hearing so it is expected she will not appear.

Is this a setback for Brit? Not really ... remember that as long as she's under her father's conservatorship, her visitation with Sean and Jayden is practically guaranteed, assuming her condition is relatively stable. Without her father's legal oversight of her estate and medical affairs, the court will be LESS likely to continue the "extended" visitation Brit was recently granted.