Rachel Uchitel G-String for Two

5/3/2012 1:00 AM PDT

Rachel Uchitel -- G-String for Two

As the latest pregnant famous person to do their best Demi Moore Vanity Fair cover impersonation, topless former Tiger Woods mistress Rachel Uchitel showed off her growing baby bump -- and nearly everything else -- in a sexy maternity g-string.

This is baby's first thong.

The 37-year-old -- who is due in eight days -- then went a little more demure by also posing covered up in a sheet.

Uchitel -- who's married to former Penn State football player Matt Hahn -- knows a new mother needs to set a good example.