Singer Rihanna was spotted at the wedding of her friend and assistant, Jennifer Morales.

On Monday, the flame-haired beauty was spotted in a pretty lilac gown with a low back and silver embroidery around the waist. With her hair tied up, she completed her look with minimal make-up, reports mirror.co.uk.

"The Pour it Up" hitmaker teamed her gown with simple gold and silver jewellery, and carried a bunch of white roses.

The singer's best friend Melissa Forde also played bridesmaid, and looked chic in a dark blue and silver gown.

Rihanna took to image-sharing website Instagram on Monday to send a congratulatory message to her friend.

She said: "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'."