When it comes to choosing a bridesmaid, you want someone that’s dependable, creative, organized, and always has your back. Sometimes, that person also just so happens to be famous, as was the case when Rihanna, Taylor Swift, LC, and Kristin Cavallari all pulled maid duty for their favorite gal pals.

NEW YORK, NY - NOVEMBER 01: Ashley Olsen and Mary-Kate Olsen attend the Christian Louboutin Cocktail party at Barneys New York on November 1, 2011 in New York City. (Photo by Cindy Ord/Getty Images)

Another famous celeb twosome has just jumped on the bridesmaid bandwagon in a move perhaps even more surprising than any of the aforementioned stars combined: Mary-Kate and Ashley Olsen.

According to POPSUGAR, the notoriously private fashion goddesses took a break from dealing with their intern woes to make their way down the aisle in honor of close friend Maggie Kayne’s nuptials. Kayne tied the knot with now-hubby Travis Hayden in a picturesque outdoor ceremony in Mangawhai, New Zealand, and the pint-size power duo was there to not only celebrate, but partake in the ritual.

Donning matching floor-length all-black gowns (because OF COURSE), their look was classic Olsen, right down to the chic parasol they carried and what we think was Ashley’s stole: Leave it to the Olsen twins to show up in dresses we’d actually WANT to wear.

The 30-year-old pair then took some time off (a difficult thing to do for Ashley) to enjoy the Tara Iti golf club owned by Kanye’s father, spending four days of R&R with their respective men, Olivier Sarkozy and Ashley’s BF, 58-year-old Richard Sachs.

Sheesh. Is there ANYTHING these two don’t look great doing? Sigh.

How do you feel about black bridesmaid dresses? Tell us over @BritandCo.

(h/t POPSUGAR, photos via Michael Buckner + Cindy Ord/Getty)