Not sure what to wear on Oct. 31? For $20, you could dress as Toronto city councillor and Twitter guru Norm Kelly.

Kelly took to Twitter on Thursday to advertise masks of his face for Halloween.

"Need a Halloween costume? Norm Mask! $20!" the councillor posted to his 194,000 Twitter followers.

Kelly tweeted the message along with a photo of himself, partially covered by a cartoon two-dimensional mask with eye holes. The mask was created by sisters Aifel and Kheila Cruz, who run a photobooth service called Essentialist Media.

Just 20 minutes after posting, the message had been retweeted 138 times and favourited more than 270 times.

The 74-year-old has become something of a Twitter star this year, reaching 100,000 followers in August. Twitter Canada deemed the politician's quick rise to online fame the "#summerofnorm."

Kelly's fame spread across North America after posting attention-grabbing tweets including one that defended Toronto rapper Drake against U.S. performer Meek Mill.

The Scarborough-Agincourt councillor tweeted that Meek Mill was "no longer welcome in Toronto" in July, a message that was retweeted more than 130,000 times and favourited by 113,000 people.

Kelly told CTV Toronto in August that he uses his 140-character messages to show the "fun side" of his life, and doesn't use the social networking service as a soap box for political opinions.

"It's like being at a party. You can enjoy yourself."

On Thursday, Kelly used a tweet to raise money for a Canadian charity. He wrote that proceeds of the sale of the "Norm masks" will go towards Canadian Feed the Children, an organization that focuses on food security and education in Canada, Bolivia, Ethiopia, Ghana, Haiti and Uganda.

Anyone wishing to reserve a mask is asked to email the councillor at