Let's explain this first.
In Alec Baldwin's new memoir (titled 'Nevertheless'), he claims that he didn't know actress Nikki Reed's age at the time when they filmed a sex scene for their film 'Mini's First Time'. Nikki was only 16 years old at the time.
Alec is firing off accusations towards producer of the film Dana Brunetti, claiming he wasn't told how old Nikki was before filming. He claims he was told AFTERWARDS by his hairdresser on the set.
Dana is firing back though, claiming Alec DID know.
Read their Twitter exchange below: