Why, we don't know, but it makes for a cute photo of the Duggars.

Five female members of the 19 Kids and Counting of TLC fame.

That's a lot of kids. Sort of an understatement with the Duggars, but wow.

A typical night at home with Jim Bob, Michelle and ALL the Duggar children.

Jim Bob leads the kids in some Bible study at home in Arkansas.

The grown Duggar kids make the most headlines, but these ones may bring the most smiles to viewers.

The Duggars don't allow more than side hugs before marriage, but once those vows are traded, public displays of passion are all good. See this wonderful photo of Jessa Duggar and new husband Ben Seewald kissing.

Inspired by their daughter and son-in-law late last year, Jim Bob and Michelle Duggar followed suit, inviting their (married) fans to send in photos of themselves kissing as well.

Jill Duggar and husband Derick Dillard announced her pregnancy with this beautiful Instagram photo.

Jill Duggar and husband Derick Dillard weren't about to let her pregnancy slow down their humanitarian work. Here they are in El Salvador in December 2014.

The pregnant Jill Duggar was feted at a baby shower before the birth of her son. Israel David Duggar arrived on April 6!

Jessa and Jill Duggar are both married off, but their older siblings John-David and Jana - twins now 25 years old - are still single and ready to mingle.

Jana Duggar is a saint. There's no one better when it comes to taking care of her younger brothers and sisters - or nieces and nephews for that matter.

Jessa Duggar shows off her modest but beautiful ring from Ben Seewald, the man she would go on to marry.

Josh Duggar, the first kid of the Duggars' 19 Kids and Counting, has 3 and Counting of his own these days (wife Anna is expecting their fourth in 2015)!

Firstborn son Josh Duggar shows one of his own Duggar kids (he's at 3 and Counting) the ropes on the piano.

Joy-Anna and Jason Duggar are another pair of look-alike siblings.

Josiah Duggar shows off his musical stills in this artistic Instagram image.

Jessa Duggar loves Instagram. And making her hands into the shape of a heart in photos. She does this frequently, and here is one of our favorites.

Josie-Brooklyn Duggar is the youngest of the 19 Kids and Counting. They have so many kids that Josh became a dad right around when his sister was born!

The Duggars have some fun during a recent visit to the College of the Ozarks.