Only a week after Nick Lachey popped the question to his longtime love Vanessa Minnillo, Jessica Simpson announced that she too will be heading to the alter with her beau of only five months, Eric Johnson.  Jess made a promotional appearance in Kansas City on Saturday, proudly showing off her brand new (and unique!) bling.  The question is--how does it stack up next to the whopping diamond bauble that her ex-husband purchased for his bride-to-be?

Nick finally popped the question to Vanessa after years of dating, getting down on his hands and knees with a 4-carat Asscher cut diamond ring, surrounded by trapezoidal baguettes.  US Weekly is reporting that the ring was designed by Bader & Garrin, a diamond company out of New York, and that it is estimated to be worth $125,000.

NFL hunk Eric proposed to Jess with a thre