Sporting the company's trademark red and tipping a captain's hat, Millie looked quite the part as she posed with the Virgin crew.
Completing her look was Virgin Red lipstick and a high chignon.
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The newlywed was helping the company celebrate the launch of their UK domestic service.
Millie took to Instagram to share a pic of her new look. "Just opened virginatlatic #LittleRedWorld in #manchester loved being part of the crew for the day!" she wrote alongside the snap.
The former Made In Chelsea star shared a snap of her beauty look. "Hair and make-up done. Nearly ready for take off! @virginatlantic," she wrote.
After the Manchester event, she headed straight back to London where she is due to visit her husband Professor Green's West End club Ink. "Thank you to my amazing glam squad today @Bumbleandbumble @macdanni keeping my hair in for tonight! @INKLDN x"
Millie recently came back from her honeymoon and immediately was forced to deny pregnancy rumours that were circulating.
"Pregnancy rumours are just that.. We are far too busy enjoying each other right now", she said.
The denial came a day after she and Professor Green made their first official appearance as married couple.
Shortly after arriving back from their honeymoon, the newlyweds visited INK for a night out.