Jinger Duggar is overjoyed for sister Jana Duggar to be expecting her first baby with husband Stephen Wissmann. "So stoked for my sis @janamduggar & @stephenwissmann!!!" Jinger, 31, wrote via her Instagram Story on Monday, August 18. "Can't wait to meet this precious little one and to be the fave auntie ha." Jana, 35, and Wissmann revealed on Monday that they are expanding their family, alongside a black-and-white photo of the couple sharing a sweet smooch. In another image, the pair each placed a hand on Jana's stomach as Wissmann kissed her head.