LiviaN just pointed this out, and I can't help but share what she may have discovered.
If you look at the new LAX pictures, it looks like Ian and Nina are wearing identical rings on their forefingers!
Look at the picture submitted by 100Beats. Okay, so there's her ring...
And if you check out the Nina&Ian Airport Los Angeles video submitted by Bibi88...at 0:22 of the video, the ring looks similar to Nina's.
Hmmm? Not alike? or totally the same ring! OMG?