A museum, and a publishing company helped kick off the summer social season in the Hamptons on the Saturday of the Memorial Day Weekend, but the biggest parties are still to come.

The publisher of Niche Media, Jason Binn, held his annual Memorial Day barbecue at his home in Southampton with Christie Brinkley as his celebrity guest. She is on the cover of the June issue of his company ‘s Hamptons Magazine.

The Solomon R. Guggenheim Foundation also held a party for its patrons at a private house on Meadow Lane in Southampton. The hosts were its director, Thomas Krens, photographer Peter Beard, and arts patron Janna Bullock.

These days, though, it’s not a party unless it’s also a fund-raiser. The first big one of the season is on Saturday, June 2, when ’60s clothing collector-turned-designer Lisa Perry — wife of hedge fund bigwig Richard Perry — holds a bash for Planned Parenthood at their home in East Hampton. Expected at the gathering is the organization’s president, Cecile Richards, a daughter of the late Governor of Texas, Ann Richards.

The most coveted invitation this summer is shaping up to be the five Saturday night concerts at the Ross School campus in East Hampton that will feature Prince (July 14), Dave Matthews (July 28), Billy Joel (August 4), James Taylor (August 11), and Tom Petty and the Heartbreakers (August 25). The Ross School, a nonprofit private school that also has a campus in Bridgehampton, was founded by the late Steven Ross, who was a chief executive of Time Warner, and his wife, Courtney Ross, who has also founded a charter school in Lower Manhattan. The school will receive a fee from the promoter for the concerts.

The only ticket being offered to the stellar series is a $15,000 pass to all five events.