Four times the fun for Donald Trump Jr. and Vanessa Trump!
Donald Trump's businessman son and his bride of seven years welcomed their fourth child -- a baby boy -- on Sunday, Trump Jr. tweeted.
PHOTOS: Hot star dads
"It's a BOY!!! Vanessa and baby are doing great," the proud dad confirmed on the microblogging site.
The family's new arrival joins older siblings Kai, 5, Donald III, 3, and Tristan, 11 months.
PHOTOS: Stylish celeb tots
Shortly after confirming her fourth pregnancy in May, Trump's La Poshett handbag designer wife told Us Weekly they were "so blessed to be able to have another child to add to our happy, growing family."
Married since 2005, the couple said that their two oldest children were over-the-moon about getting a sibling.
PHOTOS: Busy celeb moms on the go!
"Tristan . . . doesn't know what's going on," Donald told Us. "But Kai and Donnie are so excited! They're so involved with Tristan and love helping me feed and change him--so they're looking forward to having another baby around!"
This article originally appeared on Usmagazine.com: Donald Trump Jr., Wife Vanessa Welcome a Son!
Victoria’s Secret Angel Candice Swanepoel talks to WW about wearing the $10 million bra, eating steak, Taylor Swift and if she plans to marry her boyfriend.
See some of the hottest celebs that joined frats and sororities while in college.
Former "Housewife" Lydia McLaughlin dishes about leaving the "RHOC," her stance on plastic surgery and more!
From Julianne Hough to Duchess Kate, see some of our favorite celebrities hair transformations
From George and Sandra to Taylor and Ed, see more of Hollywood's platonic pairs.
See what the cast of "That '70s Show" is up to today.
Justin Bieber hits the ice, plus more of today's 7 Wonders of the Wall, hosted by Brian McFayden.
© 2013 Microsoft