She was presented with a selection of different shapes and sizes of diamonds, and chose a teardrop ring.
Model and fitness enthusiast Mr Brown asked his girlfriend to marry him in front of a touching backdrop with a romantic message.
On it, he wrote: “Today, on your special day I had the pleasure of putting a smile on your face all day. For there is no greater gift that I could think to give you.
“A woman, whose heart is full of love and devotion to me, a woman whose loyalty to all those she loves stands unmatched, a woman whose generosity and willingness to help others around her flourish knows no depths.
“A woman who single-handedly made me believe that a soulmate, a lover, a prayer warrior, a confidant and a best friend could be wrapped up in one amazingly beautiful soul that was handcrafted for me.
“That’s why today I wanted to give you the greatest gift that I could ever give you.
“My heart and soul completely, unwavering and all yours.