Jessica Simpson and husband-to-be Eric Johnson put off their wedding for years and now, funny enough, she’s getting hitched within weeks of her baby sister! For those of us intimately familiar with the lives of the Simpson sisters, Jess and Ashlee will both be walking down the aisle by the end of 2014. In fact, their ceremonies are barely a month removed from one another!

Jessica, of course, has been engaged to Eric since November 2010, but through the various ups and downs of life (read: two babies, back to back) the couple have yet to make it all official. On the opposite end of the relationship spectrum, Ashlee’s only been engaged a few short months  — beau Evan Ross popped the question at the start of the year — but is fast-tracking her ceremony (well, fast-tracking in comparison to her big sis).

Now the pop divas are putting their heads together to make sure their bashes are equally fabulous! A source tells E! News that Jess and Ashlee are “very close and really supportive with each other,” and having neighboring wedding dates hasn’t changed that. In fact, it’s only bringing them closer.

“They have been doing lots of wedding stuff together,” the E! source continues. “During this wedding process they both have been talking to each other about their ideas, even though they both are having very different weddings.”

We’d figure as much from the few details we’ve gleaned about their respective ceremonies. Where Jess will be going all-American and saying her vows in the rocket’s red glare of the July 4 weekend, her younger sister is going for a “Bohemian-style” at the end of August.

However the wedding planning goes, it’s sure going to be a big summer for the Simpsons!

Source: E! News

Elisabeth Kramer is an Assistant Editor at Wetpaint Entertainment and our resident Downton Abbey expert. Follow her on Twitter and Google+!