Madonna endorsed Hillary Clinton for president and knocked Donald Trump's sons in an Instagram post last week.

The 58-year-old Queen of Pop commented on a photo of Eric and Donald Trump, Jr. being circulated online. In the photo, the brothers are holding a dead leopard they hunted and killed.

“How Big of [a] Pussy Do you have to BE to kill this Noble Animal for sport?” Madonna rhetorically asked. “Just ask Donald Trump Jr and his brother Eric. One more reason to vote for Hillary!”

Actress Mia Farrow also criticized the brothers.

“What went so wrong with Trump sons that they could kill this beautiful creature,” she tweeted.

Other celebrities backing Clinton's presidential bid include Kerry Washington, Debra Messing, Justin Timberlake, Barbra Streisand and Cher, who helped raise $1.5 million for Clinton in Provincetown.

(Related: Barbra Streisand “shocked” at Donald Trump's rise.)