Even though Joe Jonas has only enjoyed one day with his adorable niece Alena Rose, the proud uncle can't help but gush over the precious new addition to his family.
E! News caught up exclusively with the first time uncle on Saturday at the G-Star RAW X Bionic event in New York City.
"She is so tiny, it kind of scares me," the 24-year-old said about the pint-sized Jonas. "She was awake, kicking and smiling and grabbing for your finger."
Joe revealed that to have a new life in the family, as well as "a female life," is "mind blowing" and "exciting."
"I honestly can't wait to spend more time with her," the singer said.
"I mean he is a dad now and it's kinda crazy," Joe said about his older brother. "I know he has not gotten much sleep. He instagrammed a picture at like 2 p.m. saying 'good morning' with the baby so he was probably was up all night with her as she was crying."
Joe admits that the dynamic between the brothers is now closer than ever, thanks to the arrival of Alena Rose.
"I don't want to sound cheesy saying that but you just want to spend more time with each other and you're just excited for the next chapter for each other's lives."
So does Joe have baby fever after spending time with his niece?
"I will take my time," he said with a laugh. "I will take my time with running around and having my fun. Down the road."