Catherine Lowe Makes Jason Mesnick Wax His Chest on Bachelor-Themed Celebrity Wife Swap

Sean Lowe Defends Wife Catherine's April Fool's Day Pregnancy Prank After Her Apology

It wouldn’t be the beginning of April without a joke upsetting a few people.

After posting a photo with what looked like a pregnant belly on Instagram as an April Fool’s Day joke, Bachelor alum Catherine Lowe received some major backlash.

Catherine and Sean Lowe Are Expecting Their First Child: See Her Baby Bump (PHOTO)

Catherine Lowe is pregnant!

The Bachelor alum announced on Instagram on Wednesday that she’s “17 weeks” along.

In a surprising turn, PEOPLE can confirm that the baby does not belong to her husband, Sean.

Sean Lowe on Bachelorette Twist: 'It's Downright Degrading'

PEOPLE Exclusive: The Bachelor’s Chris Soules and fiancée Whitney Bischoff open up about their small-town life together – and starting a family! Subscribe now for instant access to their plans for beating the odds and making love last.

The Bachelor's Sean Lowe: 'Date Night Is Not Enough' for Wife Catherine

Sean Lowe and Catherine Giudici celebrated their first wedding anniversary last month and continue to keep the romance alive with fun date nights.

Fashion Week 2015: Catherine Giudici Debuts Blue Eyebrows (Yes, You Read That Correctly) at New York Fashion Week

Bachelor Couples Who Made Love Last

The Bachelor's Catherine and Sean Dish on Their First Year of Marriage

Bachelor couple Sean Lowe and Catherine Giudici have another reason to celebrate in the new year – Jan. 26 marks their first wedding anniversary!

So what have the two been up to since saying ”I do” in front of 6 million television viewers and honeymooning in Tahiti?

Bachelor Star Catherine Lowe Gets Bangs: See Her New Style

Sean and Catherine Lowe Are Finally Moving in Together