The foursome donned the uniforms for a photoshoot with a number of air stewardesses to advertise a Guinness competition, which is offering fans the chance to win a free first-class flight to a Six Nations game of their choice.
"It been good fun dressing up as a pilot," the Daily Mail quotes Brown as saying. "Makes me feel important and I've enjoyed it."
Roberts added: "I actually feel quite swanky in this. I can imagine wandering through an airport dressed like this, followed by the in-flight attendants."
England and Ireland are preparing to go head to head this weekend, while Scotland take on Italy and Wales face France.