Amber started the shade-slinging by going on a radio show and ripping Tyga for dating 17-year-old Kylie Jenner. The back story, of course, is Tyga's ex Blac Chyna is Amber's BFF. Then Khloe Kardashian stood up for her kid sis with a tweet reminding everyone Amber's admitted she was a "stripper since I was 15 years old.”
Now ... Amber's fired back with a gem of a meme -- a pic of Kanye West with the text ... "When ur sister in law calls out ur ex for being a stripper ... But ur wife has a sex tape."
And that was Amber's 2nd salvo blowing up Kim -- earlier she tweeted Khloe, "I'll be that lil whore to support my family like ur older sister is a whore 2 support hers."
All units respond. Multiple shots fired.