United Kingdom, Aug. 5 -- Sophia Myles has blasted James Franco as the "worst actor I've ever worked with".

The 46-year-old actress starred alongside Franco in 2006 movie Tristan and Isolde, with the pair taking on the lead roles.

Franco has been hitting headlines in recent weeks due to bizarre videos he has been sharing on social media, including one in which he claimed to have found "footage" of extra terrestrials.

Sophia, who also starred in Doctor Who, took to X to weigh in on James' "tragic alien videos", as she called them an "attempt to gain attention".

Referring to the previous public allegations of sexual misconduct and inappropriate behaviour from multiple women, Sophia added: "Even before the allegations, he was the worst a...