Jane and Loki
As much as that would have been a dramatic fashion statement if they walked in wearing golden helms, it probably wouldn't be good form toward the hosts either. Her's with the too-high horns and Valkyrie's with golden feathered wings that might give those horns a run for their money, height-wise.
It was more than enough that everyone could tell with a glance who wore the pants. Loki didn't mind that, one bit. She harbored a bit of a one-sided thing for Sif from afar, when they were all much younger. So being by the side of a strong and valiant woman warrior? Yes, please.
Loki looked at her with an expression that was pure mischief, even if she knew digging for information right now wasn't the time. Still, a little hint here and there might dredge something up later on.
"Definitely serious," Loki replied. "Give me but a week's time, and I'm certain I can ease our mutual curiosity. I won't even have to resort to less than honorable methods either."
For instance, shape-shifting into something as small as a fly, which she did long ago in a certain Dwarven forge. That plan backfired magnificently.