
Rihanna took some time out of her busy 4/20 celebrations yesterday to slip into a beautiful lilac gown and act as bridesmaid to her assistant Jennifer Morales.
Jennifer, who has worked with Ri-Ri for years, married partner Aaron Davis in a beachy wedding in Hawaii yesterday – and Rihanna tried her best not to outshine the bride.
She wore a floor-length light purple dress for the Honolulu beach ceremony and carried a bouquet of cream roses.

Her gown was embroidered with silver flowers that matched her diamante belt and earrings.
After the wedding, Ri took to Instagram to congratulate her mate.

“#davis420wedding I can't believe this day is finally upon us!!!!! 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!!! Celebrate the marriage that we've been lucky enough to witness grow and evolve for all these years!!!!

“#420 will never be the same again!!! God bless you both!!! And Jen you HAVE to take the Davis name bitch!!! Pull it together (in my Jhat voice)!!! #CheersToTheDavis',” she captioned a video of the happy couple.
She then shared a snap of herself and Jen with fellow bridesmaid Melissa Forde wearing matching dressing gowns.

“$he loves me!!!!! @jennnrosales congrats slut #davis420wedding,” she wrote next to it.
In total, Jen had 11 (count ‘em) bridesmaids, four flower girls and nine groomsmen. Which is MENTAL.
Anyway, congratulations to the newlyweds! And we hope someone got Rihanna changed into something less dressy before she started lighting up for 4/20…
MORE celebrities in bridesmaids dresses (swoon)!
Celebrities as bridesmaids

Beyonce
Queen Bey acted for bestie Kelly Rowland when she married Tim Witherspoon in early May 2014.

Britney Spears

Britney Spears (again)

Jennifer Lawrence

Jessica Simpson
Jessica became a bridesmaid for the second time this week when she slipped into this beautiful royal blue gown for her publicist Lauren Auslander's wedding in Rhode Island.

Lorde

Keira Knightley
Keira caused a media storm when she was pictured at her brother's wedding as a bridesmaid. The lovely bride doesn't seem too put out that all the attention's on the Hollywood A-lister standing next to her.

Lady Gaga
This amazing image sees Lady Gaga looking quite normal - no Kermit dress, no meat slippers (as far as we can tell) - and doesn't she just look lovely?

Mollie King
The Saturdays' singer joined her siblings to celebrate her sister's big day. Her dress and hair is utter perfection, no?

Demi Lovato

Chelsy Davy
Here's Prince Harry's ex at one of them posh society weddings. She looks nice.

Claudia Winkleman
Claudia 'Human Fringe' Winkleman was the maid of honour at best friend Victoria Coran's wedding to David Mitchell.

Georgia May Jagger
Back before she was all over our TV screens being all "Get the London look" and pouting, the daughter of Jerry Hall and Mick Jagger was asked to be a bridesmaid at Leah Wood's wedding. She was joined by nine other bridesmaids and flower girls, along with celebrities like Kate Moss and, er, Cilla Black.

Georgia May Jagger
Here's Georgia with Rosie Huntington-Whiteley and Alice Dellal at Leah Wood's wedding.

Jessica Alba
Jessica and husband Cash Warren formed a married-couple partnership with her as the bridesmaid and him as the best man at a close friend's wedding.

Kourtney Kardashian
At sister Khloe's wedding to Lamar Odom, the whole Kardashian klan were out in full force. Kourtney wore a deep purple...

Kim Kardashian
...Kim was in a dark lilac shade...

Kendall Jenner
...While Kendall wore pastel purple.□

Jessica Biel
While we probably wouldn't pick brown as one of our wedding themes (we haven't really decided which colours yet, get back to us in a few years, yeah?), it does suit Jessica. Justin Timberlake looks pretty dapper, too.

Kate Bosworth
What's with the black? We do love those cut-out shoulders though.

Miquita Oliver
TV presenter Miquita didn't look too happy to be chief bridesmaid at Lily Allen's wedding to Sam Cooper. Let's hope she cheered up a bit inside.

Pippa Middleton
Arguably the highlight of the 2011 Royal Wedding was Pippa Middleton arriving in that carriage, then getting out. A million men uttered involuntary gasps. A million women immediately got online to buy Fit-Flops in the hopes of attaining such a perfect arse.

Pippa Middleton's bum
And there's the back of that dress in all its glory. Majestic.

OK, it might have all been make-believe, but there's always going to be a spot in our stone-cold heart for Renee and Colin Firth dressed very inappropriately for a winter wedding in The Edge of Reason.
Renée Zellweger

Rebecca Loos
Anyone remember 'media personality' Rebecca Loos? Nope? No-one? Let's move on.

Kelly Brook
Ooh, look at Ms Brook. We like her and the bride's co-ordinating one-shoulder deets, although not sure black is the best choice for a summer wedding...

Jenny Frost
Another black bridesmaid dress? This time it's former Atomic Kitten Jenny Frost wearing it to perfection.

Sharon Osbourne
Yes, we had to double and triple-check this picture too, but it really is Sharon Osbourne acting as maid of honour at Carmen Electra's wedding in 2003.

Teri Hatcher
Ahahhahahahahaha. Hahahhahahaha. Ahahahahhahahahaha. Haaaaaa.

Victoria Beckham
Tee hee, it's nine-year-old Posh and she's actually smiling (front row middle). Adorbs.

Zara Phillips
Before the Royal Wedding, there was a Royal at a wedding. A young Zara looks very sweet in this bridal gown.

Anthea Turner
Incredible: vivid metallic lilac gowns, massive golf umbrella to shield the bridal party from the paps. Love it.