Coming soon: the Marc and Risa Show, no, the Risa and Marc Show

Move over, Donnie and Marie. There's a new brother-sister act in town. Well, not exactly new. Risa Vetri Ferman is well-known for being the Montgomery County district attorney. Her brother is famed Philadelphia restaurateur and chef Marc Vetri. Thursday morning they'll speak together for the first time when they are co-keynote speakers at the Philadelphia Business Journal's 2013 Corporate Philanthropy Summit. (Visit the event website for more information on it, including ticket prices.)

Ferman laughed today about her sibling gig.

"It could be fantastic, it could be our last," she said. "We’ll have to see how it goes."

The duo definitely have different personalities, she said: "I’m the bossy big sister who tells everybody what to do. Marc is the elegant, aritistic, creative soul who nourishes and nurtures everybody."

Those differences are evident in their Twitter feeds and their Twitter profile photos.

One of Marc's recent tweets: "Belly all lined up."

That's meat he's talking about and that is pictured on his Instagram account.

 One of Risa's recent tweets: "Congratulations to ADA Samantha Cauffman, ADA Justin Boehret,Montco Detective Paul Bradbury and Norristown."  

That's a conviction she's talking about in a high-profile murder case.

If they had any big blow-up, brother-sister fights when they were kids, we'll never know about it, if Risa has anything to do with it. "That’s in the grand jury," she said. Her brother couldn't be reached to deny or confirm anything her sister said to Montco Memo.

The siblings sharing the podium was an easy choice for the Corporate Philanthropy Summit, said Lyn Kremer, publisher of the Philadelphia Business Journal, who got the idea of inviting them after talking with the district attorney about Mission Kids, the nonprofit children's advocacy center she co-founded in Montgomery County, and then thinking about the Vetri Foundation for Children, which he helped found.

"In hearing what kind of a family they came from, we thought that would make a very interesting presentation, growing up in a family where they valued charity and giving back," Kremer said.

Kremer diplomatically demurred, throwing in a dash of humor about her own family, when asked if she thought the audience would see any good brother-sister ribbing.

"Obviously, they are independent thinkers based on the career paths they’ve chosen," she said. "I know I have siblings — and I know what happened in our family."