Sex, lies and all that Chaz

Chaz Bono says beginning the sex-change process to turn him from a woman to a man is “the best decision I’ve ever made.”

The 40-year-old writer, activist and reality-TV star, who was born a girl named Chastity to Sonny Bono and Cher, says he feels great at eight months into the years-long transformation.

“Life is short, and life is precious,” he told ABC’s “Good Morning America” on Thursday. “This is who I am. I need to finally be who I am.

“To me, gender is between your ears, not between your legs. I’ve felt male as far back as I can remember.”

Even Eddie’s not steady?

New on the celebrity relationship beat:

• James Caan is seeking a divorce from his wife of 14 years, Linda.

• James Van Der Beek has filed for divorce from his spouse of nearly six years, actress Heather McComb.

• “CSI: Miami” actor Eddie Cibrian – who’s divorcing his wife of eight years – is suing Life & Style Weekly for defamation over a recent story claiming he was cheating on new girlfriend LeAnn Rimes.

And speaking of rhymes …

Fresh off her triumph at the Country Music Association Awards, Taylor Swift has netted a deal to create a line of greeting cards.

American Greetings Corp. announced this week that cards, gift wrap, stationery, online greetings and other related products overseen by Swift will begin appearing in the spring. Terms of the deal were not disclosed.

The birthday bunch

Actor Joseph Campanella is 82. Actress Marlo Thomas is 72. Singer Dr. John is 69. Actor-director Harold Ramis is 65. Actress Goldie Hawn is 64. Actress-singer Lorna Luft is 57. Actress Cherry Jones is 53. Christian singer Steven Curtis Chapman is 47. Actress Nicollette Sheridan is 46. Singer Bjork is 44. Country singer Kelsi Osborn (SHeDAISY) is 35. Actress Jena Malone is 25.