Jennifer Hudson's new slim figure has heads turning, but she claims her fiance is still getting used to her svelte shape.

The singer stopped by 'The Tonight Show' to chat with Jay Leno last week, and she revealed that her 80-pound weight loss was a huge change for her fiance, David Otunga.

"He's getting adjusted to it," Hudson said of her new look. "He's not really into change that much."

Hudson admits she's definitely more into fashion and clothes now that she's proud of her new figure, but said Otunga doesn't always get her new style.

"He fusses at me like, 'Why do you have to have to get all dressed up to go out, and why can't you just go out like you used to?'" she said. "And I'm like, 'I'm a walking billboard now, honey!'"