The outspoken comedienne even stunned her daughter Melissa with her remarks, which followed the troubled actress' revelation on her 'Lindsay' reality show at the weekend that she had recently lost a baby.
Asked what she thought about the news, Joan, 80, told TMZ: ''I hope she kept it.''
As Melissa recoiled in horror, she added: ''Excuse me, what do you think I am? I was born with a coat hanger in my ear.''
The 'Fashion Police' host then laughed when she was asked if she thought the 'Mean Girls' star would have made a good mother.
She replied: ''She would have been diapering the wrong end.''
Lindsay, 27, made the revelation on camera when explaining why she had taken a break from filming the OWN show, which chronicled her attempts to relaunch her career following her sixth stint in rehab.
She said: ''No one knows this, and we can finish after this, I had a miscarriage for the two weeks that I took off.''
After a long pause, the flame-haired beauty added: ''It's a very long story,'' and failed to offer any other details, including who the father of her unborn child was.
The 1969 session, including the only known recording of 'Sunshine Woman' by the band, will be included on a re-issue of 'The Complete BBC Sessions'...
The 55 year old actor joined Chris Martin and co. on stage in New Jersey to perform 'Earth Angel' and 'Johnny B. Goode'.
Bjork Digital comes to London's Somerset House in September, along with a single live show at the Royal Albert Hall.
Kim Kardashian released an audio excerpt from a phone call between Kanye and Taylor Swift over the lyrics of 'Famous' - but if it was recorded...
There's very much a strength of conviction in remaining what you were, but arguably more so in becoming what you want to be.
The BBC drama starring Aidan Turner returns to BBC One on September 4th.
Guns N' Roses were detained at the Canadian border last week for gun possession but they're adamant the weapon didn't belong to them.
Standing three apples high, the tiny Smurfs live happily and peacefully in their medieval Smurfs...
Filmmakers Stern and Sundberg, better known for punchy political films like The Devil Came on...