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Even when she was the target of Joan Rivers' red carpet zingers, Reese Witherspoon still laughed.

"She was always very nice to me and even when she wasn't I still laughed," the Oscar winner told E! News. "She still made me laugh."

Witherspoon was a fan of the late comedian, who died last Thursday at age 81.

"I love Joan," Witherspoon told E! Toronto International Film Festival.

"It's a hard thing because everyone loved her so much," she said. "But seeing all this wonderful work that she did, how she entertained people for years and years, it just really touched my heart."

See Reese Witherspoon's Inspiring Message to Fan with Cancer

Joan Rivers Funeral: Whoopi Goldberg, Kathy Griffin, Howard Stern and Others Send Off Icon in Style

Rivers' funeral was held Sunday in New York City.

Howard Stern delivered the eulogy, and Hugh Jackman sang the late comedian's favorite song from "A Boy From Oz" - "Quiet Please, There's a Lady on the Stage."

The funeral was a who's who of the comedy and celebrity world, with the likes of close friends Kathy Griffin, Whoopi Goldberg, and Rosie O'Donnell. Other A-listers like Sarah Jessica Parker, Diane Sawyer, Geraldo Rivera, Donald Trump, and her "Fashion Police" co-stars Giuliana Rancic and Kelly Osbourne were also in attendance.