Celebrity pregnancies

Oscar-winning actress Reese Witherspoon is reportedly pregnant with her third child. Witherspoon married CAA agent Jim Toth a year ago. She has two children, Ava and Deacon, above, with her first husband Ryan Phillippe. The actress won an Academy Award for her portrayal of June Carter Cash in “Walk the Line.” (Tammie Arroyo / Associated Press)

March 23, 2014 9:28 PM PT

Alyson Hannigan arrives at the premiere of ‘ “American Reunion” at Grauman’s Chinese Theatre on Monday. Hannigan, who appeared in all of the “American Pie” films and in television shows “How I Met Your Mother” and “Buffy the Vampire Slayer,” is expecting her second child with actor Alexis Denisof. (Frazer Harrison / Getty Images)

“Jersey Shore” star Nicole “Snooki” Polizzi , above with fiance Jionni LaValle, confirmed in March that she is pregnant with her first child. The MTV reality series, which often features her drinking and smoking, will begin production on its sixth season this summer. (Christopher Polk / Getty Images)

Uma Thurman, who starred in “Kill Bill” and “Pulp Fiction” arrives at Mercedes-Benz Fashion Week in New York on Feb. 12. The actress is pregnant with her third child and first with boyfriend Arpad Busson. She has two children with her former husband, actor Ethan Hawke. (Donald Traill / Associated Press)

TV personality Vanessa Minnillo and husband, singer Nick Lachey, confirmed in March that they are expecting their first child. (Christopher Polk / Getty Images)