Gigi Hadid has vowed to support her "love" Zayn Malik in his battle with anxiety.

Zayn Malik and Gigi Hadid
Zayn Malik and Gigi Hadid

The 23-year-old singer axed his performance at Capital FM's Summertime Ball in London at the last minute on Saturday after suffering an anxiety attack and Gigi has taken to Twitter to praise him for his bravery and publicly declare her love for him.

Gigi, 21, wrote: "Z - I've seen the battles you go through and the way you fight to get to a place that allows you to get up there for your fans. Your bravery in those times makes me proud, but your honesty last night proved what you're all about, being real. Human recognises human. You made the best of the situation and have given your fans an opportunity to understand you better as a performer.

"Those who can find compassion now are the ones who deserve to watch you continue to grow. We are all here to support you and make each experience easier. Your talent and good heart will never lead you wrong.

"Love you and so proud of you always :) G (sic)."