The buttons at the knees didn't cause any issue at all, being mostly for decoration. He couldn't help but notice the way she was looking at him - she seemed awestruck, like she thought his body was a very pleasant surprise - so he gave her a minute to just take it all in visually before he moved again.
Although the buttons had caused no problem, there was still the issue of the knee high stockings for both of them. He moved to step out of the pants, and took the time to slip off the stockings too. Fucking her in just knee high socks would be a touch ridiculous, after all.
Once he was out of his own, he moved his attention to her body again, slowly rolling down the stockings he'd pushed to her knee previously - one and then the other, his hands gliding along her legs. "You're so perfect," he murmured. "God, I should've stopped behaving weeks ago. But you are so worth the wait, every second of it," he was telling her as his hands moved to the garter belt to try to remove the very last piece of 'clothing' at last.