"Happy birthday @ashleybenson There is so much I could say but something I love and cherish most about us is that I don't need to because YOU KNOW and that's all that matters. It's you and me which is my favourite. My safe place. You let me be silly, you let me be wild, you keep me free, secure and curious. I feel like I've known you my entire life and I am so proud of watching you grow into the woman that you always dreamt of being," reads part of Cara's caption on a series of pictures posted in honour of Ashley's birthday.