President TrumpDonald TrumpProject Veritas surveilled government officials to expose anti-Trump sentiments: report Cheney: Fox News has 'a particular obligation' to refute election fraud claims The Memo: What now for anti-Trump Republicans? MORE is knocking Joe BidenJoe BidenFauci says school should be open 'full blast' five days a week in the fall Overnight Defense: Military sexual assault reform bill has votes to pass in Senate l First active duty service member arrested over Jan. 6 riot l Israeli troops attack Gaza Strip Immigration experts say GOP senators questioned DHS secretary with misleading chart MORE's celebrity support, saying he's bringing in bigger crowds without his Democratic opponent's star-studded surrogates.

Speaking about the former vice president during a Monday campaign rally in Scranton, Pa., Trump went on a riff about Biden's high-profile Hollywood endorsements.

"Now he's got Lady Gaga," Trump said, as the crowd booed at the mention of the "Rain on Me" singer, who was poised to campaign with Biden in Pittsburgh on Monday.

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"I could tell you plenty of stories about Lady Gaga," Trump said. "I know a lot of stories about her."

Trump also slammed Jon Bon Jovi, who hit the campaign trail in Pennsylvania last month.

"And Jon Bon Jovi, every time I see him, he kisses my ass: 'Oh, Mr. President,' " Trump said. "But he'll get something out of it, just like everyone is."

"But you know what happens, you bring in some of these — and they don't draw, by the way, we draw much bigger crowds than these people," Trump continued. "But you know what happens, he'll sing a song or two and then he'll leave, and the crowd will leave, and Sleepy Joe is up there talking."

The Biden campaign has held several drive-in and small-scale events amid the coronavirus pandemic to allow for social distancing. Trump — who announced he tested positive for COVID-19 last month — has instead opted for large campaign rallies that typically feature supporters packed closely together.

On the eve of Election Day, Trump noted that his 2016 White House opponent also enjoyed her share of A-list celebrity backers, which didn't ultimately land her in the Oval Office.

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"That happened to Hillary, too," Trump said of the former Democratic presidential nominee. "They got Beyoncé and they got Jay-Z, right?"

"And [Jay-Z] started using the F-word in front of this crowd," Trump exclaimed. "The crowd left, and Hillary was standing onstage with an empty place, and she was talking and people were surprised."

Trump appeared to be referring to a pro-Clinton concert held just days before the 2016 election, in which the "99 Problems" rapper performed and didn't censor all of the profane words in his songs' lyrics.

The president — who made headlines last month when he warned Iran not to "f--- around with us" during a phone conversation with conservative radio host Rush Limbaugh — continued to boast about the size of his rallies during the swing state stop.

"Let me tell you something," Trump said, "when you look at these crowds that we're getting, there's never been anything like it. ... This is your ultimate poll. This is not the crowds of a second-place finish."

—Updated at 4:55 p.m.