Jenelle Evans hits the beach in Wilmington, North Carolina on May 5, 2012. Credit: AKM-GSI

Teen Mom 2 star Jenelle Evans is loving her new body.

Less than a week after getting breast implants, the 21-year-old single mom unveiled her plastic surgeon's handiwork by wearing a skimpy Victoria's Secret bikini on the beach in Wilmington, North Carolina Saturday. Evans -- who tweeted that she "was a B is now a full C" -- has since vowed that she "wouldn't do any other kind of form of plastic surgery."

Evans' new boobs aren't the only reason she's making headlines. Though ex Kieffer Delp helped her recover from surgery May 2, she has since rekindled the flame with Gary Head. "I'm sure they'll be over before they fully begin," a source tells Us Weekly.

In the meantime, Evans -- mom to son Jace, 2 -- is dealing with the painful side effects of going under the knife. "I'm not going to lie, my boobs are hurting so bad. I can't stop crying," she tweeted Sunday night. "Gary left and I'm home all alone. I wish he was here."

Despite her painful recovery, the Teen Mom 2 star -- who "can sleep only on my back and side" -- is happy with the results. "I'm more confident in my looks," she explained via Twitter.