Credit: Cynthia Hudnall

They did it!

In an Oct. 17 ceremony at Charleston, West Virginia's Coonskin Park, Teen Mom 2's Leah Messer became Leah Simms as she wed longtime beau (dad to her twins Aliannah and Aleeah, now 15 months) Corey Simms.

Together since early 2009, Leah, 18, and Corey, 20, share photos and intimate details from their special day in the new Us Weekly, out now.

The first-time bride beamed in a $1,549 Maggie Sottero gown -- which her mom bought at 30 percent discount! "I felt really pretty in it," dental assistant Leah tells Us.

That's an understatement, Corey tells Us. "She took my breath away," the water-distribution operator says. "I just got so emotional when I saw her."

What did Corey -- who calls himself a "redneck" -- wear for his big moment as groom? A camouflage vest and tie tux from Perry Ellis!

When the couple exchanged their vows, Corey slid a diamond-studded, white-gold band on her finger; she gave him a titanium camouflage-patterned ring, featuring the engraving "Forever and Always."

For much more details and photos from the big day -- the flowers, the cake. the reception, the food (mac 'n cheese!), and why they say they'll beat the odds -- pick up the new Us Weekly, on stands today!