Avril Lavigne, who turned 30 Saturday, Sept. 27, celebrated her birthday at The Bank Nightclub in the Bellagio Resort and Casino in Las Vegas without husband Chad Kroeger, Us Weekly reported.

While the 39-year-old frontman of Canadian rock band Nickelback was noticeably absent at the bash, the "Hello Kitty" singer appeared to be all smiles wearing a bright pink dress while partying with friends and family, including sister-in-law Amie Lavigne and best friend Caryn Alpert, according to Daily Mail.

The British newspaper also pointed out that the "Complicated" hitmaker appeared to have replaced her engagement and wedding ring with a pearl solitaire. Also missing was the massive 17 carat emerald-cut ring that Kroeger gifted Lavigne on their one year wedding anniversary in July.

Lavigne and Kroeger tied the knot in the South of France in July 2013 after being engaged for one year. Kroeger proposed to the songstress with a massive 14-carat ring, after a month of dating, according to New York Post.

But earlier this month, rumors broke that couple has been dealing with some relationship problems as of late.

"It's over," a tipster told Us Weekly. "He has been going around L.A. telling people that they are divorcing."

"Chad is just a complete jerk in the way he talks to her, and the way he talks to people in general. A lot of her friends don't like him," a source told Us Weekly, as quoted by Hollywood Life.

The musicians have reportedly been "fighting a lot" and that "they're having a lot of issues," E! News reported. A source close to the couple told the entertainment news site that, "there's jealousy on both sides. She flirts, he flirts. She's very insecure to begin with."

Lavinge and Kroeger also apparently unfollowed each other on social media as well, EntertainmentWise noted.

Despite the rumored marital problems, an onlooker told Us Weekly that the birthday celebrant was in good spirits Saturday. She was reportedly dancing with her girlfriends and happily posing for photos.