Life is good for Hilary Duff. The multi-platinum singer and actress just turned 23, just married hockey player Mike Comrie, just did a spin on “Gossip Girl” and has been tapped by the NBC sitcom “Community” to be its celebrity guest to help juice ratings during the November sweeps. And, reportedly, our former Lizzie McGuire will play a villain. How’s that for acting?

Beyond all that, Duff has just published her first young-adult suspense novel and will greet fans and sign copies of “Elixir” (Simon & Schuster, $17.99) on Oct. 15 at 7 p.m. at Books & Books, Bal Harbour. The usual celebrity guidelines are in place: Duff will sign copies purchased at Books & Books (pre-order at booksandbooks.com); signature only (no personalized inscriptions); photos may only be taken from the line (opens at 6 p.m.). Duff will sign up to three books.

Books & Books in Bal Harbor is at 9700 Collins Ave. Info: 305-864-4241.

Whip out your BlackBerry and set your alarm to So Yesterday! Hilary Duff has set the date for her wedding!

According to sources, Duffster plans to strut herself down the aisle and wed hockey player Mike Comrie on October 7th!

As for the rest of the wedding deets, sources say the frontrunner for venue is the San Ysidro Ranch in Santa Barbara and Hilary is hoping to keep the wedding small.

Yeah, good luck with that!

P.S. – We’re expecting our invitation any day now!

Congratulations to our girl cause she recently acceoted Mike’s engagement proposal!

It’s official: Hilary Duff is engaged to her hockey player boyfriend Mike Comrie.

Confirming rumors that the actress, who recently appeared on Gossip Girl, would soon be hearing wedding bells, her rep says that the Edmonton Oilers player, 29, did indeed propose.

“Hilary Duff and Mike Comrie were engaged this weekend while vacationing in Hawaii,” rep Nanci Ryder said Friday. “After having been together for over two years, they are very excited to share this happy news. They are thankful for all of your warm wishes.”

Early in their courtship, when he was with the New York Islanders, Comrie surprised Duff, 22, with a Mercedes for her birthday.

Duff, who said she read Hockey for Dummies to better understand her man, became a fixture at his hockey games. She’s been spotted in the stands at Oilers games, and also cheered him on when Comrie played for the Ottawa Senators, where she had some famous company in the stands: Carrie Underwood – whose fiancé Mike Fisher also is on the team.

Comrie returns the favor by frequently accompanying Duff to film press events and shoots.