The ongoing legal war between Blake Lively and Justin Baldoni has taken another turn … with notable online personalities being drawn into the fight over possible collusion via their Blake-bashing commentary.

A source with direct knowledge tells TMZ … Perez Hilton, Candace Owens and Andy Signore have all been subpoenaed to turn over any and all communications with Justin Baldoni and the Wayfarer parties.

The subpoenas may be connected to the judge’s order earlier this month allowing Blake to take discovery in order to uncover the alleged lengths — if any — Baldoni’s side may have gone to in working with notable anti-Blake content creators … as part of the alleged smear campaign.

Hilton, Owens and Signore have all used their sizable digital platforms to discuss case developments … and the trio’s commentary has largely hated on Blake’s claims, while propping up Baldoni’s side — and his $400 million countersuit — that is, until it was dismissed.

In fact, it was popular YouTuber Signore — via his channel “Popcorned Planet” — who claimed the “exclusive” featuring Baldoni lawyer Bryan Freedman‘s statement as to why the Wayfarer parties chose to forego amending their dismissed lawsuit.

As you know … Blake scored a big win earlier this month when a judge tossed out the claims Baldoni made against Lively, her husband, Ryan Reynolds, and the New York Times in the massive monetary lawsuit.

Baldoni accused them of defamation over an article about Justin’s ugly feud with Blake behind the scenes of their 2024 film, “It Ends With Us.” He insisted it was all part of a smear campaign against him.

We’ve heard back from Candace … who said, for the moment, she’s unaware of the court docs.

CD says … “Given the fact that I have not received any subpoena yet, I appreciate Blake’s team leaking this to TMZ to alert me to it. And of course, I have not the slightest idea what I am being subpoenaed for as I knew none of these parties when their respective lawsuits were filed. But stay tuned, and I’ll let audiences know on my podcast!”

A lawyer for Signore also said, at the moment … he’s unaware of the situation.

His attorney says … “My client has not been served with any legal process at this time. Should service occur, we intend to vigorously defend against any claims and will protect the confidentiality of sources on both sides—consistent with the principles of press freedom and journalistic integrity that outlets such as TMZ relied upon in their own coverage of the Amber Heard trial.”