Jana Duggar from "19 Kids and Counting" has already been a part of her younger sisters Jill and Jessa's wedding entourage. This time, she will be a bridesmaid once again in her good friend Michaela Bates' wedding to Brandon Keilen.

The wedding will be held on Aug. 15 this year at the Wallace Memorial Baptist Church in Knoxville, Tennessee. Jana will be one of Michaela's eight bridesmaids, who also include Michaela's mom Kelly.

The Bates have been a close family friend of the Duggars, and they also have their own faith-based reality show called "Bringing Up Bates." It's no surprise that Jana and Michaela formed a deep friendship, given their many similarities.

"Both Jana and Michaela are the second oldest of 19 Kids, and the oldest of nine (Jana) or ten (Michaela) sisters. And get this! They are only eleven days apart in age. Jana was born on January 12th, 1990, and Michaela on January 23rd," the Duggar Family Blog revealed.

But while Michaela is about to be married, Jana still isn't. The eldest Duggar has remained single despite her younger sisters' marriages. There was an earlier rumor Jana was seeing NFL Christian star Tim Tebow, but it turned out to be false since they have never met each other yet.

It all started when Jana's parents Jim Bob and Michelle Duggar met with Tim's mother Pam Tebow at a charity banquet several months back. The Duggars posted a photo of their meeting on their Facebook page and wrote, "We enjoyed hearing Pam Tebow share tonight at the Loving Choices crisis pregnancy centre banquet! A great lady and a great cause!"

Because of the photo, people thought that Jim Bob and Michelle met up with Pam in order to discuss the possibility of their children dating. The Internet went wild about the idea of Jana dating Tim, and even Ben Seewald, Jana's brother-in-law, thought it was a great match.

"He'd be a great addition to the family," he told PEOPLE. Ben strongly believes that Tim would help boost the standards of the Duggar family football matches. "I'd definitely have him on my team," he laughingly said. "We'd win every time!"