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Melissa Rivers makes her first public appearance since the death of Joan Rivers on Friday’s “Fashion Police: Celebrating Joan,” where she reveals President Obama sent his condolences after her mother’s passing.

“Fashion Police” co-stars Kelly Osbourne, Giuliana Rancic and George Kotsiopoulos join Rivers for an hour-long E! special honoring her late mom.

“She affected so many people, and people you would never expect to have humor,” says Rivers in a short clip from the episode.

Rivers explains, “I received a letter from the White House, President Obama, someone who was often a target of her jokes, as was Mrs. Obama, but I received a hand-written note saying ‘Not only did she make us laugh, she made us think.’”

“That’s one of the things that people now are realizing. It wasn't just the funny. She made us think,” she adds.

The 90-minute “Fashion Police: Celebrating Joan” special airs on Friday  night.

Watch the emotional video below.