### Clue: Artist with US band has trademark shirt (9)
### Answer: REMBRANDT 
 ### Explanation: Definition: Artist
  REM(alternative rock band, formed in 1980 in the US) **plus**(has) BRAND(trademark, as in "designer brands") + T(short for a tee-shirt, collarless and buttonless).
Answer: van Rijn, Dutch artist, famous for portraits.