Follow along below for live updates throughout the day.
Mueller initiated the litigation, claiming Swift fabricated the groping story and pressured the radio station to fire him.
As Radar readers know, days after Swift's bodyguard kicked Mueller and his girlfriend out of the meet-and-greet following Swift's accusation, the radio host was sacked from his job with little to no explanation.
Swift is countersuing Mueller, claiming sexual assault.
Mueller said in the lawsuit he was aware of an incident but said it was one of his friends who had touched her inappropriately and then bragged about it.
Swift and Mueller are both smiling in the picture.
He was sacked "without cause", and KRBZ bought him out, Mueller said.
Baldridge brings up other photos from that night with Swift and other fans.
"That's a man right?"
"Let's be clear about something from the onset - inappropriate touching is offensive, it's wrong and should never be tolerated", Mueller's lawyer, Gabriel McFarland, told jurors.
"Is it possible someone could see your photo with Ms". Her suit also claims that any money recovered from the case will be donated to charitable organizations dedicated to protecting women from acts of sexual assault. I know any Taylor Swift fact that you can ask me.
Mueller acknowledges he could have indeed called the police on his own. Immediately after the photo, she yelled to her team, "Dude, that guy just grabbed my ass".
He acknowledged touching her-but more in an accidental manner, he said.
"She forgot me", Mueller said.
- Greg Dent, Swift's bodyguard, was standing a few feet away during the photo op. Kuta said she remembered the 2013 concert where Mueller met Swift; she'd written lyrics down her arm and dressed as a star, a play on the title of one of Swift's songs, "Starlight".
The singer's lawyer, Douglas Baldridge, attacked the credibility of former Denver DJ David Mueller on Tuesday, asking jurors: "What's wrong with this picture?"
During cross-examination, Baldridge again accused Mueller of trying to get rich off of Swift.
Testimony will continue today in the eighth-floor U.S. District Court courtroom in the Alfred A. Arraj Courthouse.
Baldridge is contending the photo doesn't make clear the position of Mueller's hand, but says it's clear his hand is behind Swift's bottom.
Mueller has denied the allegation since it was originally made four years ago, and his lawyers described the accusation as "nonsense".
"She reacted, pushed her skirt down and jumped to the side", Baldridge said. They tracked them down, escorted them out of the facility and called Mueller's station.
David Mueller is in court with Taylor SwiftWho is David Mueller?
Mueller sued Swift after her team told his bosses at a music station that he reached under her dress and touched her backside before a 2013 concert in Denver.
Swift, her mother and Bell are expected to testify.
Mueller is seeking up to $3 million in damages. The attorneys are now at the bench.
"Today Ms Swift is taking a stand for all women", he said in an opening statement, reports US Weekly.
Court will resume at 1:30 p.m. Follow 9NEWS for updates. But unlike a lot of celebrity courtrooms, this one is closed to the media. Judge Martinez is not back at the bench yet, however. The case is finally going to trial, which is expected to last nine days. It's unclear at this point what exactly the teams are discussing. "It's an assault", Baldridge said.
Read our Day 2 wrap here.