What is the song on the Gossip Girl commercial that starts out with Serena and nate sitting down in the kitchen then Serena says oh god and then the song starts playing?

The song featured in the Gossip Girl commercial during the scene with Serena and Nate in the kitchen is "Young Folks" by Peter Bjorn and John. This track is well-known for its catchy whistling melody and upbeat vibe, which perfectly captures the essence of the show's youthful and glamorous atmosphere. The song sets the tone for the drama and intrigue that defines the series.