Taylor Swift's Mom Breaks Down in Court During Second Day of Alleged Groping Trial

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Taylor Swift's trial continued on Tuesday in Denver, Colorado, where the jury heard opening statements in the legal battle between the singer and ex-radio host David Mueller.

Swift is accusing Mueller of groping her butt during a meet-and-greet in 2013, which Mueller denies. Mueller sued Swift in September 2015 -- two years after the alleged incident -- claiming her accusations that he inappropriately touched her were false, and cost him his $150,000-a-year job as a host at country station KYGO-FM as well as future career opportunities. She countersued him one month later for assault and battery.

The 27-year-old singer, who dressed in a black collared dress and wore her hair in a bun, was attentive during the trial on Tuesday, writing notes back and forth to her attorneys and to her mother, Andrea Swift, during the morning session.

WATCH: Taylor Swift's Alleged Groping Trial: Everything You Need to Know

AP Photo/Jeff Kandyba

At one point, Andrea, who sat next to her daughter, broke down in tears during opening statements, as Swift’s attorney described how Andrea always tries to protect her daughter. Andrea was at the meet-and-greet where the alleged groping incident happened in 2013, and is named as a defendant in Mueller's lawsuit.

The photo of the alleged assault, which was published by TMZ in November, was presented to the jury on a monitor. A poster-size print of the picture -- which shows Swift posing between Mueller, whose right arm is hidden around Swift, and his then-girlfriend -- was also displayed on an easel in the courtroom.

According to the BBC, Swift's attorney, Douglas Baldridge, claimed that Mueller "grabbed" Swift's rear end.

"It's not inappropriate touching. It's assault," Baldridge said.

He also accused Mueller of attempting to capitalize on Swift's fame.

"His motivation is money, calling attention to himself, and getting revenge on his boss," Baldridge claimed.

However, Mueller's lawyer, David McFarland, said during opening statements that the image shows his client's hand "is not underneath Miss Swift's skirt, and her skirt is not rumpled in any fashion."

"Falsely accusing someone of inappropriate touching is equally offensive, equally wrong and should not be tolerated," McFarland said.

Following opening arguments, Mueller testified for 30 minutes, which Swift listened to intently. Mueller -- who was terminated from his position at KYGO two days after the alleged incident with Swift and is seeking $3 million in damages -- also got emotional at one point during his testimony.

AP Photo/Jeff Kandyba

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Both Swift and her mother are also expected to testify during the trial, which is expected to last until Aug. 17.

For more on the legal battle, watch the video below:

-- Reporting by Tracie De La Rosa