Britney Spears and Paris Hilton hit the clubs together in Los Angeles almost every night over the Thanksgiving holiday weekend, and even went shopping with Spears' son in tow.

The pair, who hung out in Las Vegas the previous weekend, have been regularly enjoying each other's company since Spears filed for divorce from Kevin Federline earlier this month.

They kicked-off the festivities on Tuesday when Spears, 24, went to a post-American Music Awards party Hilton hosted at her West Hollywood home.

The following night, they were spotted at Teddy's at the Roosevelt Hotel in matching leopard-print outfits, while Spears¡¯ estranged husband Federline was hosting an album party across town.

On Friday, Hilton left her sister Nicky and friends at the nightclub Les Deux to pick up Spears and the pair stopped at Hyde Lounge before eventually heading back to Les Deux.

On Saturday, the pair were back in action, shopping in Malibu with Spears' son, Sean Preston, before heading back to Hyde to party with Mary-Kate and Ashley Olsen later that night.

A source who saw them at Hyde Friday tells People magazine, "Paris was acting like Britney's boyfriend.

"She opened doors for her, held her hand, and even had her arm around Britney's lower back. Britney happily accepted Paris' friendly gestures'."