Diane Kruger need only look to beau Joshua Jackson for fashion advice.
"I don't really know what it is I'm looking at, but I know when it's not right," Jackson, 31, joked to UsMagazine.com at the BAFTA/LA 16th Annual Tea Party on Saturday.
Check out 19 fun party pics from the Golden Globes!
"Honestly, I'm really not that helpful," he added.
"That's not true!" said Kruger, 33. "It's the greatest advice because you know how women can get, you know, that poufy look... and he's like, 'What are you wearing? It makes your butt look like it's as big as a house!'"
Quipped Jackson, "Yeah, like something just vomited on your body!"
"No, he's never that bad," continued Kruger.
Rate the styles the stars rocked on the Globes' red carpet
Jackson had nothing to do with the pale, tea-length frock Kruger donned to the BAFTA event (shown at left).
"This one you were pretty clear about right from the beginning," Jackson remembered.