The mega outpost of The Party People in Drummoyne — which also has a store in San Souci — prides itself on being 'Australia's biggest party store'. So if you've had a look online but need to know if the costume you've got your eye on will fit, head here as it stocks the company's full range. Across more than 1700 square metres, The Party People Megastore stocks costumes across a bunch of different themes, plus accessories like body parts and cosmetics to help you with the moustache or out-there eye colour you need to perfect your look.

If you're the party host, it's worth noting that the store stocks a hefty range of supplies from balloons, lights and table decorations to baking tools and confectionery. There are disco balls, bubble machines, confetti cannons and fog machines available for hire, too.

Image: Trent van der Jagt.