Topshop is celebrating its debut Halloween collection, "Witching Hour," by...

Topshop is celebrating its debut Halloween collection, "Witching Hour," by hosting a Twitter "Trick or Tweet" competition where customers can tweet to Topshop their best Halloween costume or style tips. Credit: Handout

If you like Topshop, Twitter and trick-or-treating, you’re in luck.

The international retailer seeks to digitalize Halloween by hosting a Twitter competition to celebrate its first Halloween collection, “Witching Hour.” Between Oct. 26-31, customers can tweet to @Topshop their favorite Halloween style tips or a photo of their costume with the hashtag #TrickorTweet on Twitter or Instagram.

“We love the idea of using Halloween to connect our digital and physical worlds,” said Chief Marketing Officer of Topshop Justin Cooke.

After entering the contest, Topshop will send a message to thank the entrants for participating in the contest. The best tweet each day will win a $150 gift card and be re-tweeted.

But if you don’t have $150 handy, Topshop will accept tweets as currency. In selected flagship stores, customers will be able to purchase Halloween-inspired makeup using tweets in the “Topshop Tweet Shop.”

Customers who visit select Topshop stores between Oct. 26-31 will be able to take photos in front of “Trick or Tweet” backdrops, earn prizes for the best Halloween inspired outfits and receive complimentary makeovers with a Halloween twist.