Daughter of Dave Mustaine, Electra Mustaine celebrated her 21st birthday yesterday.

Megadeth frontman Dave Mustaine has shared a photo of himself with Electra on Instagram, and wrote:

“Happy birthday Electra. 21 years ago I delivered you into this world. I’m happy that I was the first person to hold you. I love you. ❤”

Dave’s eldest child, Justis Mustaine also shared a photo with Electra and wrote:

“Happy 21st birthday sis! I can’t believe how grown up you’ve become…along way since building pillow forts for you as kid. Love you much 🎉🎁🎈”

And, Electra responded:

“Nothing beats the forts. Those were the best!!!! Love you big bro❤️❤️”

You can see the Instagram posts below.