When Queen Victoria married her beloved Prince Albert in 1840, she cast aside the traditions of earlier noble-born brides—and unwittingly changed the course of wedding history. For one thing, she proposed. In lieu of a velvet jewel-toned look, she chose a white dress (a trend that she is credited with starting). As for her hair, she wore a humble wreath of orange blossoms, rather than the requisite diamond-encrusted tiara. The sweet white flower is said to symbolize love and virtue, a blessing in full bloom.
— Read more in The Bride Wore Orange Blossom: A History of Wedding Day Scents at Vanity Fair.