Parents-to-be Nicole Kidman and Keith Urban pick up a few parenting books at their local book store on Saturday in Nashville, TN. Nic, 40, was seen picking up "Pocket Dad: Everyday Wisdom, Practical Tips, and Fatherly Advice" for Keith and for herself, "Your Pregnancy, Week by Week". The Aussie power couple expect their baby in late July. And on Sunday, Nicole celebrate Mother's Day with some girlfriends. Nic and her gal pals were all smiles as they grabbed lunch together in Nashville. Kidman's pal, Naomi Watts, recently was asked if Nicole will be a good mother. Watts said, "Of course. She's already a great mom. Whenever you're pregnant, you always call on your pregnant friends to compare notes. That's what happens in close friendships."