Paris' younger brother Conrad Hilton, 21, was due to be sentenced on 10 July (15) - the date of his sister Nicky's wedding in the U.K. - after pleading guilty to common assault for his outburst on a flight from London to Los Angeles last summer (14).

Parents Rick and Kathy Hilton filed a request with the court in New York asking for the date to be moved forward so they can support their son and still attend their daughter's wedding, and a magistrate has now granted a new sentencing date of 16 June (15).

Nicky Hilton is due to wed her fiance, British banking heir James Rothschild, at a venue near London on 10 July (15).