Ashlee Simpson-Wentz and her husband Pete Wentz were reportedly caught in a public tiff during a night out in Chicago over the weekend.

The couple was celebrating the first anniversary of Wentz’s Chicago bar Angels & Demons when Ashlee began shouting at him to leave in front of partygoers on August 15.

The Melrose Place star been drinking heavily and the pair continued to argue ferverishly as they exited the venue.

A source told gossip blogger Perez Hilton: “Pete was in the DJ booth when Ashlee came up completely wasted and yelled at him to leave. They fought, she told him he was horrible in front of a whole group of people and made him leave his own party early. So they make a scene and leave the bar.”

When someone tried to take a photo of the couple, Ashlee “chased the guy down the street and made him erase the pictures.”

The couple – who have a 10-month-old son Bronx – were then ushered into a car by their security team and taken home.

Ashlee, 24, has since denied she and 30-year-old Pete fought at the bar.

Writing on her Twitter page, she tells Perez: “Your story is WAY off. my husband is an amazing dj and was dedicating songs to me. We were just havin fun. Our love is amazing. (sic)”

Earlier this year, Ashlee admitted to verbally assaulting actress Michelle Tractenberg, Pete’s former girlfriend, while she was intoxicated.