Jackie Stallone shows off her inflated trout pout at Sly’s The Expendables 2 premiere

Jackie Stallone, Sylvester Stallone’s 90-year-old mother, showed off her inflated lips last night at the Los Angeles premiere of The Expendables 2.

The astrologer, along with her indefatigable pout, joined her son Sylvester Stallone, 66, at the Los Angeles premiere of his latest action movie.

Jackie Stallone’s famously crooked grin, which her son has also inherited, appeared bigger than ever as she posed for photographs on the red carpet at the Grauman’s Chinese Theatre.

Apparently her quest not to grow old gracefully has continued in earnest – and she appears to have had a fresh bout of collagen injections.

Three-times-married Jackie Stallone, whose maiden name is Labofish, was dressed in an outfit you wouldn’t catch your average 90-year-old grandmother in: it consisted of a short black skirt and plunging blouse, strung together by jewelled strips.

Jackie Stallone completed her look with platform heels – adding some height to her diminutive stature – and wore green contact lenses, heavy eye make-up, including thick painted-on brows.

She attended the event to support her son Sly, who was promoting his movie in Hollywood following the London premiere earlier this week.

Last night Sylvester Stallone opened up to Jay Leno in an interview recorded earlier in the day, talking about the recent loss of his son Sage, who died aged 36 last month from an apparent drug overdose.

Sly told Leno: “When life hits you pretty hard you can go into a dark corner, or you can say, <<Ok, fine,’ I’m going to find something to focus on, children, your wife, be supportive to other people too>>.

“Because I know a lot of people go through [losing a child], and they don’t get the attention that I do.

“And I feel for them, because it’s one club that no one wants to be a member of, that’s for sure.

“But I think about his memory, he was a lovely boy and I’ll always treasure that.”

Last night’s Hollywood premiere was perhaps the hardest leg so far for Sylvester Stallone, as it means returning to the city where Sage died.

Indeed, from Hollywood Boulevard where Sylvester Stallone surveyed thousands of fans tonight, it’s just a small drive to the Studio City house where his son died alone.

Sylvester Stallone was also joined by wife Jennifer Flavin last night and their three daughters, Scarlet, Sophia and Sistine.