Jennifer Garner has called out People magazine for publishing a cover story that the actress says she did not participate in or authorise to be printed.

In a Facebook post, the 45-year-old actress blasted the popular magazine on its June 12 issue that has her image on the cover.

"It has been brought to my attention that there is a People magazine cover and article out today that appear to be coming from me.

"It isn't unusual for me to receive calls from loved ones thinking I forgot to tell them I am pregnant — with twins! –(Geez Louise), but those are so ridiculous they're easy to ignore," Garner wrote on Facebook on Thursday.

The story was attributed to numerous anonymous sources and insiders that gave an insight into her life after the actress divorced actor Ben Affleck.

Garner said although it is not a "tragedy by any measure", but it affects the actress and her family and that is why she wanted to clarify before things go out of hand.

"I did not pose for this cover. I did not participate in or authorise this article. While we are here, for what it's worth: I have three wonderful kids and my family is complete," Garner concluded.