The painter popped the question to Stacey while on a romantic break in New York together – a month after they revealed they were expecting their first child together.
It happened while the pair took a horse and carriage ride around Central Park at the weekend, and Stacey was keen to tell the world of her big news, breaking it on Twitter.
"I can't believe he's finally asked me... :D" she said.
Stacey and Aaron have been dating for three years and are expecting their new arrival in April. Stacey is already a mum to three year-old Zachary, who she had when she was 19.
The couple are yet to set a date for the nuptials but they needn't worry about catering for the reception – sure Iceland will have that one covered.