The pop star's fortune rose from £85m to £125m - meaning she's the richest solo female musician in the paper's annual wealth survey.
But she's still only joint 19th in the list of Britain's richest musicians, which is dominated by older men.
Sir Paul McCartney is in the top spot with £780m with wife Nancy Shevell.
They are followed by West End mogul Lord Lloyd Webber, U2, Sir Elton John, Sir Mick Jagger and his Rolling Stones bandmate Keith Richards.
Adele is tied in 19th place on £125m with Queen guitarist Brian May.
