Rachel Hunter took to Instagram to pay a heartfelt tribute to her friend Milica who tragically passed away from cancer.

Hunter shared a sweet photo of the two of them with a lengthy caption explaining what had happened to her friend.

It read: "Milica- Milly [heartbroken emoji]. She loved + gave time to everyone she came across, she would make you laugh, feel loved, feel mischievous, those sharp eyes would also protect, she would breathe life back into you when you were down.

"Her empathy to care and listen to all she came in contact with. Kindness, no matter who you were.

"My life is richer, the tapestry woven deep with color since she entered my life, my heart is broken ripped out, and it has taken some time to share.

"Since the call early this week. Grief we all experience differently.

"But she loved to share and so with this post I share her love and laughter her Love of Life. She put up a hard fight against cancer, with her amazing angels that stood with her and took care of her during this time. You all know who you are.

"An amazing mother To her beautiful incredible kids . I stand with you and love you and am here for you.

"To be honest these words don’t do justice, you were part of my soul and always will be.

"My dear beautiful naughty, graceful, fearless force + funny, soul . I Love you. God speed."

Fans were quick to offer words of comfort to the model.

"So sorry for your loss Rachel. Sounds like she was the most amazing person spreading love and positivity to those she came in contact with. Rip," one wrote.

"So sorry for the loss of your special person," another agreed.