Rihanna acted as bridesmaid at the wedding of her assistant and close friend Jessica Morales on the weekend.

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The celebration took place on a romantic beach in Honolulu, Hawaii.

RiRi certainly got into the role of 'maid! The 27-year-old superstar was pictured on Instagram wearing a satin robe embroidered with 'bridesmaid' and larking about with the bridal party.

Though her Badgley Mischka  dress was a classic bridesmaid shade (lilac) with whimsical floral details, Rihanna amped up the fashion factor; the figure-hugging tulle gown had a glamorous low back, small train and an embellished waist.

Mrs. Davis = @jennnrosales

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bridesmaids. #davis420wedding

A photo posted by badgalriri (@badgalriri) on

The singer shared excited captions ahead of the nuptials on Instagram, saying "#davis420wedding I can't believe this day is finally upon us!!!!!"

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She added, "I'm so happy and so proud to see my big sis @jennnrosales and my big bro @the_aa become one today!!! A wedding is a celebration of a marriage!!! That's what we gon do!!!"

Congrats to the Davis' @jennnrosales @the_aa #WhatGodblessnomancancurse 1❤️

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We think Rihanna made one super cool bridesmaid, but what do you think? See the star in bridesmaid mode to decide!

#Davis420wedding 1❤️

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