Bride Jennifer MacFarlane wanted her bridesmaids pretty in pink. Simpson, a veteran of no fewer than six weddings, was up for the challenge.
Emma Cooper said okay to her bridal party wearing white lace when she tied the knot in Sydney, Australia, in 2010.
The Alias star and her fellow bridesmaids are simply lovely in lilac for this 2006 ceremony.
Just one of the Girls on her friend's wedding day.
Back in 2011, Selena sported this sweet blue creation for a beach wedding in Cabo San Lucas.
Kate Middleton's sister stole the spotlight at the 2011 royal wedding, coming and going.
BFF Jennifer Rosales was getting married in Hawaii on 4/20 but it's hard not to feel like her bridesmaid was the only girl in the world.
Nicole "Snooki" Polizzi's BFF and other former Jersey Shore stars were in her wedding party on the day she said yeah to beau Jionni LaValle in 2014.
Simpson scrubbed up nicely to be maid of honor alongside best man Zach Braff at CaCee Cobb and Donald Faison's 2012 wedding.
The Pride & Prejudice star rocked a fuchsia frock at her brother Caleb's nuptials in 2011. "It was a great dress and I had a great night," she said afterward.
The Blue Crush star looked elegant in black for a pal's I-dos.
Five years before she married long-time love Justin Timberlake in Naples, the actress was a bridesmaid at 7th Heaven sister Beverley Mitchell's 2008 wedding in Ravello.