There’s nothing matronly about Diana Ross’s mother-of-the-bride look. At her daughter Chudney’s wedding in Maui, Hawaii on Sunday, the 71-year-old singer donned an ivory off-the-shoulder Vivienne Westwood Red Label gown that could turn heads. The bride — who is Ross’s youngest daughter — wore a strapless ball gown for her wedding to longtime boyfriend Joshua Faulkner,...