It was a week of full of baby joy and happy couples for celebrities. Robert Pattinson and Kristen Stewart got cozy as they celebrated the wrap of Breaking Dawn and her 21st birthday at a party with friends in British Columbia. Meanwhile, several expectant stars, like Tina Fey, Kate Hudson, and Victoria Beckham, showed off their growing baby bumps, while Angelina Jolie and Brad Pitt took a brief break from their own parental duties for a date night at the theater in LA. In the UK, Kate Middleton and Prince William stepped out for their last official public appearances before their big wedding. Also this week, Reese Witherspoon's Vogue cover was unveiled, and Sean Penn and Scarlett Johansson went jogging near his Malibu home amid rumors she's moved in with him. Click through to see these and all the rest of this week's most memorable celebrity pictures!