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, pictured below.

The couple -- who got engaged in January -- are parents to a 2-year-old daughter.