Who’s getting married in the upcoming months? The new issue of Ok examines the three likeliest possibilities:

• Seventeen year old Jamie Lynn Spears and fiancé Casey Aldridge have allegedly been planning their wedding since the birth of their daughter, Maddie Brian. The couple, who live in a new house in Liberty, Mississippi, plan to have a low-key wedding in their backyard, surrounded by friends and family members. Spears is back to her pre-baby weight, and will sport a strapless, traditional gown. And Britney will be her maid of honor — duh!

• Jennifer Aniston and John Mayer have been nothing but public with their relationship since they first got together in April. Jen, who turns 40 in February, has been accompanying John on his tour throughout the summer, and sources close to the couple say that an engagement is imminent. Because Jen has already married once, don’t expect anything over-the-top.

• Jessica Simpson recently made the switch to country music, but she’s also planning on moving her relationship with Tony Romo to the next level. Jessica, who is a hopeless romantic, can’t wait till her football boy toy proposes, and is constantly leaving hints, such as bridal magazines, around the house. Her second wedding would be a traditional Texas wedding, complete with barbeque or Mexican food, and her pet Maltipoo as the ring bearer!