Red Sox slugger David Ortiz and his wife, Tiffany — who confirmed to MLB.com in April that they were separating — were side-by-side at the Fenway to the Runway fashion show at Saks Fifth Avenue on Wednesday. Tiffany Ortiz has actually been spotted at a number of recent games at the ballpark after a long absence. She posed for photos at Saks with Big Papi and the event’s emcee, WCVB-TV anchor Liz Brunner. Also at the fashion event benefiting the Red Sox Foundation were Kelsey Ellsbury, Laura Drew, DiDi Carp, and Lindsay Buchholz, who just had a baby two weeks ago. . . . Just a few hours after the runway event, bearded Boston fans crowded Fenway for the ballpark’s Dollar Beard Night, which let spectators in for a buck as long as they had a beard (even a fake one).