Gwyneth Paltrow supports ‘Iron Man’ costar Robert Downey Jr. in new venture: See pic

Iron Man stars Gwyneth Paltrow and Robert Downey Jr. had a sweet reunion

Iron Man stars Gwyneth Paltrow and Robert Downey Jr. had a reunion for the actor’s Broadway debut in NYC.

Paltrow took to Instagram stories to share a pic of the duo standing together backstage at the Lincoln…