Last Night's Parties: IvyConnect Rooftop Party At Penthouse Pool Club, Polo On The Mall After Party, Night at Nats Park With Make-A-Wish, & More!

[Diego Echeverri, Andrea Ross, David Greenhill, Rebekah Pizana, Cristina Hosmer, Bob Parr, Brandon Phillips] Where: The St. Regis Hotel Who was there: Guests included polo pro Brandon Phillips, fashion designer and retailer Steven Alan, Bull and Moose founder Diego Andres Echeverri, 10 Goal Strategy founder Andrea Ross, Greenhill Winery founder David Greenhill and Rebekah Pizana, Lauren Culbertson, Liz Barnett, Group Inc.'s Tom Gorman and Jessica Rich, Kristiane Kristensen, Kelly Green, three-day-eventer Marina Royston, Allegra Novalis, celebrity chef Lauren Sutton, Michelle Hobson, Wired Up founder Michael Reed, Los Tigres polo team patron Debbie Nash, Jovita Gross, Bonnie Ross, Mark Vargas, Linda Huntington, Bobby Dreyer, Jennifer Don, Nate Daley, George McCabe. Other details: Bull and Moose founder Diego Andres Echeverri, polo promoter Andrea Ross of 10 Goal Strategy, Greenhill Winery founder David Greenhill, and Cristina Hosmer co-hosted the Polo on the Mall after party at the St. Regis Hotel in DC on Thursday night.  The event followed chukkers on the National Mall with Great Meadow Polo Club teams organized by Whitney Ross. Polo players and the seasoned social polo crowd from the neighboring horse country mingled with DC sophisticates and enjoyed a tasting of Greenhill's award-winning Blanc de Blancs and cocktails by the St. Regis Decanter's talented mixologists.  Great Meadow Polo Club players celebrated teammates' Bob Parr and Cristina Hosmer's recent engagement and another great season of polo. [photography by Vithaya Phongsavan]