Jennifer Love Hewitt is the topic of conversation for more than just her weight this week - the 28-year-old actress has some new bling on her ring finger after her Scottish actor-boyfriend Ross McCall proposed last month. The couple decided to tie the knot after nearly two years of dating, and Jennifer says the secret to their success will be how effortlessly the two get along. "It's the first time I've ever been in a relationship where you don't have to try," she told People. "And I think that's the answer. That's when you know that you're in something really good and healthy and right."

Fellow sitcomer Ali Larter will also be hitting up the altar in '08 - the Heroes star accepted (another actor-boyfriend) Hayes MacArthur's marriage proposal over the weekend, her rep confirmed this week. Ali, who has been ranting about her "mad love" for Hayes since August, tells People that she can't wait to start a family. "I look forward to that time when I'm home with babies."

Speaking of babies . . . Lily Allen has a bun in the oven! Amidst all this week's "oh no!" hype about Jamie Lynn Spears' unplanned pregnancy, Lily's baby news kind of slipped under the radar. But for Lily, who is 22 years old and happily settled down with her rocker boyfriend Ed Simons, baby news is a reason to smile this holiday season. A source close to the British singer told The Sun: "Lily could not be happier. She is thrilled to be pregnant and can't wait to become a mum. She's a real family person ... Ed's very happy. He is really looking after her."

Just as Jennifer, Ali and Lily start to plan their family futures, Katherine Heigl is putting a period on hers. The Greys Anatomy star has spent much of the holiday season planning her Utah wedding with musician Josh Kelley, which is supposed to take place just two days before Christmas. "Everyone is already so full of cheer just before Christmas. So to throw in a wedding at that time - she just loved the idea!" a friend told the press. And what better place to get married than amidst a winter wonderland?

More wedding bells to come in 2008 - so stay tuned for HollywoodUpClose's review of 2007 pregnancies and proposals!