By Amy Ryan
Updated February 17, 2007 at 06:19 AM EST

Another PopWatch HeadScratcher to get you through the weekend:

What do these five performers have in common?

Lauren Bacall
Lucille Ball
Ella Fitzgerald
Katharine Hepburn
Elizabeth Taylor

Your answer should be as specific as possible. Send your best guess to sure to write “HeadScratcher” in the subject line and include yourfirst and last names in your e-mail. We’ll post the most interestingresponses Tuesday afternoon.