Paul McCartney and Heather Mills returned to court Monday in an attempt to agree on terms for their divorce. The fight over the wealth of the former Beatle, who is estimated to have as much as $1.6 billion, could produce Britain's largest-ever divorce settlement.

Mills, 40, looked tense and said nothing as she entered a courtroom at London's Royal Courts of Justice wearing a gray suit and bright pink shirt.

McCartney, 65, arrived at court after his estranged wife, also wearing a gray suit. He said "good morning" as he entered court carrying a large black case.

Unlike most British court hearings, divorce proceedings are heard in private, and the door of Court 34 bore a sign reading "No Admittance — Strictly Private."

The hearing before Justice Hugh Bennett is scheduled to last five days. The terms of any settlement would not become public record unless it moved to the Court of Appeal, or either of the parties chooses to reveal details.

That has not stopped a frenzy of media interest and speculation. Dozens of photographers staked out entrances to the court Monday, while two news helicopters hovered overhead.

Press reports have suggested that McCartney has offered his wife around $50 million, and that she is seeking at least double that amount.

"Current estimates suggest that Heather is likely to receive anything from 50 million to 100 million pounds ($100-200 million) as her final settlement," said Suzanne Kingston, a family law expert.