Donald Trump on Tuesday accused Hillary Clinton of "copying" his signature airplane rallies and criticized her for taking a day off campaigning.

"Do people notice Hillary is copying my airplane rallies — she puts the plane behind her like I have been doing from the beginning," Trump tweeted.

He continued in a subsequent tweet: "Hillary Clinton is taking the day off again, she needs the rest. Sleep well Hillary — see you at the debate!"

The Republican presidential nominee has become known for holding rallies in front of his giant Trump-branded Boeing 757, and on Monday his Democratic rival talked to the news media while standing before her plane.

Here's how Clinton's press conference looked on Monday:

Hillary Clinton speaks to the media before boarding her campaign plane at the Westchester County airport in White Plains, New York, U.S. September 19, 2016. REUTERS/Carlos Barria

And here's how Trump's rallies look at airports: