One Direction is currently traveling all over the globe for their highly anticipated Where We Are world tour, where Harry Styles has been photographed while showing off his topless body a lot lately. The curly haired singer is reportedly on a strict diet, and his new diet plan has recently been revealed.

Styles has apparently been drinking a lot of green tea and, of course, consuming healthy food to keep his physique in perfect shape. "Alongside the normal menus, Harry has put in his own special request of one sushi meal and five cups of green tea a day," a source close to the "Midnight Memories" band said.

The source added that the 20-year-old singer got the idea from his fellow British celebrity. "His pal Nick Grimshaw initially got him into it," the source said.

How do Harry Styles' bandmates think of his latest diet plan? The other 1D boys are apparently quite skeptical of it, saying that he won't be able to continue his hardcore regime. "But the other boys are now betting money on when he'll crack," the source continued.

Instead of being supportive of him, the One Direction members also believe that Styles' diet is "funny" and "girly." "They want none of the sushi and green tea and find it funny he's asking their chefs to prepare what they consider girly food," the source revealed.

The all five "Best Song Ever" hitmakers allegedly eat together and even use the same tablecloth and napkins to maintain some kind of routine, despite their schedules being so hectic. "They all eat together at the same table, which has the same powder blue and white spotty tablecloth and napkins in every city," the source said. "It helps give them a sense of routine and homeliness."

In addition, Sarah Nicholas, who is in charge of One Direction's food during the tour, unveiled Harry Styles' favorite food: "Harry is the most adventurous eater. He likes his Asian food and fish."