Joann's Fabrics has a set of 6 plastic hearts you could trace around. They are made by June Tailor. The measurement across is 5 1/2", 4 1/2", 3 1/2", 2 1/2", and 1 1/2".
Sorry, I cannot send you the link. When I looked for the link, I got the message that Joann's web site was too busy for searches. There were too many people signed on.
Judy