The image is from NASA Media Advisory M17-124 Georgia Students to Speak with NASA Astronauts on Space Station but there is no mention of the cool shirts.
below: The six Expedition 53 crew members gather together in the Destiny laboratory module for a group portrait. From left are astronauts Joe Acaba, Paolo Nespoli, and Mark Vande Hei, Commander Randy Bresnik and cosmonauts Sergey Ryazanskiy and Alexander Misurkin. On Monday, Acaba, Vande Hei and Bresnik will speak with students from New Prospect Elementary School in Alpharetta, Georgia. Credits: NASA
below: Cropped detail of same image.