Jackson Rathbone and Sheila Hafsadi arrive at the Adopt the Arts benefit concert at The Roxy Theatre on January 12, 2015, in West Hollywood, California. Credit: Chelsea Lauren/WireImage

And baby makes four. Twilight star Jackson Rathbone and his wife, Sheila Hafsadi, welcomed their second child on Tuesday, May 31, a girl named Presley Bowie.

"Today!! Our daughter is born!!" Rathbone, 31, captioned an Instagram pic showing the proud parents with their baby shortly after she arrived. "Presley Bowie Rathbone 8lbs 2oz Welcomed into the world at 8:38am, with love & joy."

Presley joins the couple's 3-year-old son, Monroe Jackson VI.

Today!! Our daughter is born!! Presley Bowie Rathbone 8lbs 2oz Welcomed into the world at 8:38am, with love & joy.

A photo posted by Jackson Rathbone (@jacksonrathbone) on

"One of the greatest things I could expect to be in life is a father," the former 100 Monkeys guitarist told Us Weekly in 2012 before his son's arrival. "I'm very excited."

Rathbone, who played vampire Jasper Hale in the successful film franchise, got plenty of "amazing advice" from his parents before Monroe's arrival. His dad's No. 1 tip? "Be prepared for lots of poop!"

The actor-musician and his wife, who married in October 2013, announced her second pregnancy this past March, sharing a pic of Hafsadi's seven-month bump on Instagram.

#tbt to our first pregnancy. 8-9 months in this 📷 by @iamnikkireed Now we're 7 months along! #pregnantagain yay!

A photo posted by Jackson Rathbone (@jacksonrathbone) on

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