Celebrity Pictures of Pregnant Jessica Simpson, Rachel Zoe, Pippa Middleton, Tom Cruise

We may be reaching the end of the year, but celebrities still have busy schedules filled with work and parties. Pregnant Jessica Simpson, who is apparently going to find out the sex of her baby on Monday, celebrated the launch of her latest fashion line with her fiancé, Eric Johnson, and sister Ashlee. Meanwhile, fashionable friends Rachel Zoe and Molly Sims hammed it up at a NYC showroom. Pippa Middleton, who will write a book on party planning, took in a tennis match with a friend, and Tom Cruise geared up for the release of Mission: Impossible — Ghost Protocol with some film promotion in Japan. For more of the week’s celebrity pictures, including Miranda Kerr, Sarah Jessica Parker and Taylor Swift, click through!