9:55 AM PT -- More celebs including Bradley Cooper are in town. We're told Oprah was having lunch with Nancy Pelosi at the Vineyard Golf Club. And the Secret Service now has checkpoints surrounding Obama's neighborhood.
Our boots on the ground just spotted House Speaker Nancy Pelosi and Rev. Al Sharpton who are both staying at area hotels.
Barack Obama's 60th birthday party kicked off Friday night at a resort near his home in Martha's Vineyard, and if the pre-party is any indication, the real party Saturday night will be way bigger than previously thought.
Judging from photos on a balcony, there was quite the crowd Friday ... it seems at the very least dozens of people showed up.
It's unclear how many people will attend the big party tonight, but residents say it's way bigger than an intimate family and close friends soiree. Based on the number of people who have descended on the Island, residents think several hundred people may show.
Although the Obamas are loved by many on Martha's Vineyard, some residents are angry that their Island has been upended by the party. They say Secret Service has been ordering people around and blocking roads. They're also concerned about the Delta variant ... which has become an issue in Massachusetts as well as everywhere else in the country.