Heidi Klum expressed how she feels about her age while talking about the plans of her 50th birthday bash.

In a conversation with ET, ahead of the premiere of Amercia’s Got Talent season 18, Klum was asked about the planning of her famed birthday party.

"I passed the buck to my husband!" Klum responded with a laugh.

“I thought, 'You know what? I'm, 50, honey, this party is for you to figure out,'" told Klum while adding that she  made her husband, Tom Kaulitz to arrange everything for the big birthday, "he's taking care of it for me."

"So, I'm excited! I'm just gonna lean back and enjoy that day," Klum added with a smile.

Meanwhile, the former supermodel also admitted that she doesn’t get affected by the factor of aging and never let it impact her work or anything.

"To be honest, I don't let this number change my path or what I do. It is, for me, just a number, you know? Because I don't feel 50, internally," she said.

She further noted, "I mean, sometimes I look in the mirror and I'm like, 'Oh yeah, I am 50. But internally, I feel like I'm 25."

"I'm full of energy. My husband is 33 and I know I have more energy than him.”

"So, I feel like, you know, so far so good... the birthday doesn't change anything for me. My passions are the same passions -- I love to travel and be there for my family."