Jane played an older woman in "The Wedding Crashers" who tried to seduce actor Owen Wilson in a scene.
In an interview for a US weekly, the actress confessed that after giving birth to twins 11 years ago, she decided to have implants, even though they were small, going by Hollywood standards.
"My plastic surgeon had to special order them," the Daily Mail quoted her, as telling People Magazine.
She also disclosed that she had a 'minor' eyelift.
"It was more than a decade ago. Genetically, I had baggy eyes and photographers said they didn't want to spend money endlessly having to eradicate them,"
Seymour, who became a US citizen two years ago, first came to public attention in 1973 as Tarot-reading Bond girl Solitaire in Live And Let Die.
She is currently appearing in Dancing With The Stars, the US version of Strictly Come Dancing.