Bruce Willis looks like a proud papa!

The Die Hard actor debuted his youngest daughter Mabel Ray on Twitter and the 57-year-old daddy of four looks so in love!

Willis' wife Emma Heming gave birth to the little cutie last month. The family of three are now vacationing in beautiful Budapest. Heming Tweeted below the photo: "A beautiful day in Budapest with the loves of my life."

Heming then added, "I make milk. What's your superpower?"

What a great sense of humor. Adorbs!

Mabel has three older sisters ... Rumer, 23, Scout, 20, and Tallulah, 17.