The Kennedys and Batman Begins star was seen out and about in New York City on Monday (July 2) as she made her way to and from filming for a new season of Lifetime reality show Project Runway: All Stars.
Holmes, who was reportedly accompanied by a new security team, is said to have spent six hours working on the show at Parsons The New School for Design on Fifth Avenue.
Regular judge Isaac Mizrahi told People that Holmes "did great" as a judge, with a show source adding that she was "engaged, articulate and wonderful".
Holmes announced her intention to divorce Cruise on Friday (June 29), and the reasons for the breakdown of their marriage have since been the focus of intense press speculation.
She has filed papers in New York City and is said to be seeking full custody of the couple's 6-year-old daughter Suri.
The new season of Project Runway: All Stars is tipped to premiere next month on Lifetime.
Photo gallery - Tom Cruise and Katie Holmes - their relationship in pictures:
Copyright: Rex Features