When I don’t have the clue of what to wear I always opt for a white and plain tee matched with a comfy pair of jeans. Even if they are 2 basilar elements of everyone’s closet I think that they are enough strong to really make the look.
A touch of color comes from the red stripes of the Ralph Lauren sweater, a super old pullover I used to wear when I was about 15 yo. OMG time is running so fast
Have a good day!