Photo: Lori Dorman Photography, Kevin Winter/Getty

Lance Bass - Violet and Alexander, October Birthday

Lance Basscelebrated his twins' first birthday in the sweetest, spookiest way.

“Well…. here we are. The twins turn 1 today. Everyone said how quickly it would go but I really had no idea it would go THAT fast,” Bass wrote.

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Lori Dorman Photography

Lance Bass - Violet and Alexander, October Birthday

While speaking with PEOPLE at the Environmental Media Awards Gala earlier this month, theNSYNCalum, 43, said he loves “everything” about fatherhood.

Bass said he is making a point to enjoy the milestones his twins are reaching as they grow up.

“Right now, my daughter finally took her first step, so that’s been something that’s so nice,” he said. “My son said his first word a month ago, but he hasn’t said it again. So all those little milestones are just so precious.”

Leon Bennett/Getty Images for The Hollywood Reporter

Michael Turchin and Lance Bass and their twins attend the Environmental Media Association IMPACT Summit And Cocktail Reception

“I thought once the kids came, I’d just be constantly a nervous wreck,” he said. “And it was literally the most opposite. I think because we were just so calm and not in crazy new parent mode, when they came, we were just going with the flow. I think that rubs off on the kids, I think they really pick up on that. They’re just such relaxed, fun, good kids so far.”

Despite being twins, Turchin noted that Violet and Alexander are already showing off “two very different personalities,” much like he and his own twin sister did as babies.

“[Violet] is way more strong-willed and way more active, and way more opinionated and vocal. And then little Alexander is such a sweet, docile little boy,” he said. “Right now they’re just starting the phase where they’re starting to smile back at you. It’s the best thing in the world, when you see that smile on their little faces. It’s like, ‘Oh God, I never want to leave this house ever again.’ "

source: people.com