Everything has been seen before, as in Those designs take me back to the 1950s--there really is nothing new under the sun. This world-weary view was already expressed in 1382 in the Bible translation attributed to John Wycliffe's followers: "No thing under the sun is new" (Ecclesiastes 1:9).
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Company. All rights reserved.