8/8/10, Elena Kagan was sworn in as the 112th Justice, and the fourth woman, to serve on the Supreme Court. Chief Justice John G. Roberts, Jr., administered the Constitutional Oath in a private ceremony in the Justices’ Conference Room, and then administered the Judicial Oath in the Court’s West Conference Room before a gathering of Kagan’s family and friends. (In the center of the photo is Jeffrey P. Minear, the Chief Justice’s principal assistant.)
The Court has indicated that a formal investiture ceremony will take place on October 1.
Thanks Scotusblog!