My new flats were a bit too tight in the toes. So I tried this incredibly simple and neat trick from The Observer via Lifehacker for stretching out the area. And guess what? It worked!
Put on socks and slip on your shoes.
Aim the hairdryer on the tight section for a few seconds (wiggle and stretch your feet inside the shoe for maximum benefit).
Keep the shoes on while they cool.
Remove the socks and test out shoes.
It should be stretched out, but if you need more room, then repeat the process.