hot tickets; From Italy to Laos to Glastonbury, William Norwich catches up with the hectic summer schedule of the globe-trotting social set.

Byline: William Norwich

It was the height of the spring season, a fortnight of frivolity that would have exhausted mere mortals, but our social Olympians showed no signs of fatigue. Do they ever? In fact, at a party for the writer Bob Colacello at the new, trendy rooftop club atop the Gramercy Park Hotel, the conversation was not about any warm-weather respites from the hectic social pace but about revving up for summer.

"It was such a weird winter-short but brutal. Spring was slow to come, but finally the promise of summer is here," enthused Fernanda Niven, in Vera Wang. Like so many at Bob's party, a seated dinner for about 140 the event planner Bronson van Wyck organized for cohosts Claudia Cohen, Ian Schrager, and Aby and Samantha Rosen-wearing one of her favorite new Gucci summer dresses-Fernanda has a schedule, she explained, that begins with weddings back to back: Rachel Peters and Patrick Thomas in Jamaica, Minnie Mortimer and Stephen Gaghan in the United States, then Alexia Landeau and Guilhem de Castelbajac in Deauville.

Here was Tatiana Santo Domingo in Giambattista Valli. "This is my last party," Tatiana said.

Stop the presses! Last party?

"In New York." Tatiana laughed. "I am leaving tomorrow with Mario Testino for South America and then going back to Europe." Her first semester of photography classes in the city ended this very day, but she will return in the fall. In Europe, her plans are expected to include helping to host a party in Paris for Eugenie Niarchos's new jewelry line for Repossi, happy summer days in Monaco with her constant companion, Andrea Casiraghi, and attending Valentino's forty-fifth-anniversary bash this month in Italy.

All roads on the social, fashion, and celebrity map lead to Rome this summer for Valentino's grand celebration from July 6 to 8. (What to bring as a present? Here is one idea: Taschen's great book Leroy Grannis, Surf Photography of the 1960s and 1970s. It's a winner for summer giving.) In Rome, there will be the opening of a retrospective of Valentino fashion at the Richard Meier-designed Ara Pacis Museum, the grandest showing possible of the Valentino couture collection, balls, cocktails. . . .