JR knocked up!

Congratulations to Julia Roberts!



Page Six has learned that the auburn-tressed Oscar winner is pregnant with her third child and will give birth next summer. The happy news comes as Roberts flies high in the nation's No. 5 picture, "Charlotte's Web," in which she provides the voice for the beloved spider.

Her pregnancy is somewhat of a surprise since the star, 39, had so much difficulty with her first effort to start a family with cameraman hubby Danny Moder, 37. In November 2004, she gave birth to twins Phinnaeus Walter and Hazel Patricia - but only after months of round-the-clock bed rest that followed a scare in which she was rushed to the hospital with false labor.