Nicole Richie had Joel Madden by her side and baby Sparrow in her arms after a special meal on her 29th birthday in LA yesterday. She just returned from a bikini-filled girls' weekend in Mexico with pals Christina Aguilera and Samantha Ronson. Nicole's had a busy month with Sparrow's first birthday on the ninth and trips to NYC for Fashion's Night Out and other stylish commitments like playing guest editor. She took time out of her special day to send thank-yous to many of her well-wishers on Twitter, and Nicole was especially happy to send love to Mother Nature for giving her a little bit of rain.