CHICAGO — Chicago businesses are passing a collection basket of their own after South Sider Robert Francis Prevost was elected pope.

Prevost is the first American pope — and now the world’s most famous White Sox fan. His selection as pontiff last week saw Chicagoans celebrating with memes, Masses — and merchandise.

Anthony Hall, owner of Portage Park-based clothing company Harebrained, had designed and posted a “Pope Chicago” T-shirt over a retro White Sox logo within 20 minutes of the announcement about Prevost’s appointment. Hall replaced the cap with the pope’s miter and the baseball bat with a cross.

Hall had sold about 100 of the $28 shirts by Friday afternoon.

“There wasn’t any market for this 24 hours ago,” Hall said. “But people want what everyone is talking about.”

Also in on the T-shirt sprint is Obvious Shirts, a local brand with a Wrigleyville storefront that was so fast to the punch it launched a full line of Cubs-themed pope shirts before early reports that Prevost was a Cubs fan were batted down by his brother.

“I’m fine with the Pope being a Sox fan. I’m just glad he’s no longer a Cardinal,” Obvious Shirts owner Joe Johnson wrote on social media platform X before offering up a new blue shirt with the same phrase.

Johnson is also offering White Sox pope shirts and ones with more unifying themes, including “Da Pope” and “My Pope Drinks Malört.” Johnson said he’ll send at least a portion of proceeds to the Archdiocese of Chicago and the Greater Chicago Food Depository.

It makes him feel better about profiting off the pontiff.

“I struggled with it,” Johnson said. “I had too many people asking for a shirt. … I might as well give them what they want and spin it into a good cause.”

Johnson said he’s sold hundreds of the shirts. “Da Pope” is the runaway favorite.

Multiple attempts to trademark “Da Pope” on shirts were filed Thursday.

In Chicago’s Beverly neighborhood, home good store Oleander & Artesian quickly sold out of $16 hand-stamped leather keychains with messages like “the pope calls it Comiskey.”

The Sun-Times is selling duffle bags, mugs and T-shirts with the design of Thursday’s “Da Pope!” front page. Local sports outlet CHGO also has its own $35 “Sweet Pope Chicago” shirt.

On Friday, Portillo’s started selling an Italian beef sandwich dubbed “The Leo,” which the chain boasted as being “baptized in gravy.” La Boulangerie Chicago was selling an “All Hail The Pope” baguette shaped like a cross.

The Cubs had already changed its famed marquee to read “He’s A Cubs Fan!” before Prevost’s brother revealed he’s a Sox fan. Shortly afterward, the White Sox circulated photos of a custom “Pope Leo” jersey they said was “already on the way to Rome.”

Vendors selling papal-themed shirts are a common sight in Vatican City. Hall said Chicagoans deserve to also benefit off their own good news.

The pope has been one of Hall’s biggest boons since he dropped a line of “Shut The F— Up About Chicago” shirts after Fox News aired a segment interviewing people in suburban Naperville after Chicago’s mayoral election.

“There’s so much civic pride here,” Hall said.

He’s not sure when the local “Pope mania” may slow down.

“Not everyone in the city is Catholic,” Hall said. “For the day, 100 new people shopping my website, it’s great.”

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