Kourtney Kardashian seemed far from cheerful as she arrived at her mother Kris Jenner’s 70th birthday celebration.

The reality star, 46, appeared tense as cameras caught her sitting in the back of her car, as her expressions was icy and distant.

Many believe that it could have been more than just a passing moment, as her ongoing feud with sister Khloe Kardashian continues to unfold on their family show.

Khloe, 41, was also at the big bash, which turned out to be one of the most star-studded nights in Hollywood.

Kris threw the party at Jeff Bezos and Lauren Sánchez’s huge Beverly Hills mansion, where everything was styled like a James Bond movie.

Guests included Oprah Winfrey, Mariah Carey, Adele, Meghan Markle, Prince Harry, Paris Hilton and Snoop Dogg were all dressed to impress.

Although the event was filmed by guests, no cameras for The Kardashians were allowed.

Sources told People that Kris wanted the night to be about love, family and celebration. “It was everything you’d expect from Kris. Over the top, glamorous, and full of love,” one insider said.

However, the celebration didn’t go unnoticed by neighbors, as TMZ reported that police were called several times due to loud music, including a live performance by Bruno Mars that got guests dancing into the night.

Officers later returned after learning that large decorative hedges were placed outside without proper permits.

The glamorous birthday bash hosted around 300 guests, marking another unforgettable moment in true Kardashian-Jenner style.