Now that billionaire business mogul Donald Trump has become the presumptive presidential nominee for the Republican ticket, the attention has shifted from Trump himself to his family — who could potentially become the First Family if he wins the general election in November. As the father of five children from three marriages, many have wondered: What do Trump's kids do for a living? Trump first became a father when he was 31 years old, just nine months (hello honeymoon baby) after he married Ivana Zelníčková, a former Czech model. Trump and his first wife would go on to have two more children together after Donald Trump Jr.: a daughter, Ivanka, and a son, Eric.

After Trump divorced Ivana in 1991, he married actress Marla Maples in 1993, just two months after the birth of their daughter, Tiffany. Trump and Maples divorced after six years, and the billionaire businessman married Melania Knauss, a Slovenian model, in 2005. A year later, they welcomed Trump's fifth child, a son named Barron. Trump's children span the ages of 10 to 38 years old and they have each made names for themselves in their own right despite the spotlight that comes with the Trump family name — and fortune.

Donald Trump Jr. EDUARDO MUNOZ ALVAREZ/AFP/Getty Images Donald Trump Jr. is Trump's eldest son. The 38-year-old father of five is an Executive Vice President of The Trump Organization, an international conglomerate that serves as the principal holding company for all of his father's businesses and investments and includes everything from real estate development to Trump's various entertainment and business ventures. Due to an impressive work ethic, Trump Jr. has largely managed to stay out of the tabloid circuit that seems to follow his father. In an interview earlier this month with Forbes, Trump Jr. said: A lot of people probably think that we’re spoiled kids. They think we show up to a (hotel) opening, cut a ribbon, and leave, and that we don’t actually do anything. But that’s not what we’re about. My father’s logic from the beginning was if you’re going to have someone dig a ditch for you, you’d better know how to do it yourself. So here’s your shovel. Start digging. Trump Jr.'s net worth is an estimated $150 million, according to the website Celebrity Net Worth.

Ivanka Trump Mike Coppola/Getty Images Entertainment/Getty Images Trump's eldest daughter is an astute businesswoman and accomplished professional. At 34 years old, she too holds an Executive Vice President role at The Trump Organization, specifically in development and acquisitions. Ivanka gave birth to son Theodore in March — her third child and Trump's eighth grandchild. She is also principal of several fashion lines with her name and brand, including jewelry, footwear, and handbags. Ivanka has been a model for brands including Versace, Thierry Mugler, and Tommy Hilfiger, gracing the covers of Seventeen, Marie Claire, and Stuff since 1997. Speaking to GQ Magazine in 2010 of her and her siblings' success, Ivanka said: I look at my brothers and myself and I’m, like, really proud of the fact that nobody’s, like, totally f*cked-up. Nobody’s a drug addict, nobody’s driving around chasing women, snorting coke. There’s something amazing about that. Ivanka's net worth is estimated to also be $150 million, according to the website The Richest.

Eric Trump Joe Raedle/Getty Images News/Getty Images The youngest of Trump's children with Ivana, Eric Trump is a 32-year-old relative newlywed, having gotten married in 2014 to his longtime girlfriend, Lara Yunaska, a producer for CBS News. Eric also holds an Executive Vice President role with The Trump Organization with his older siblings. Eric is also president and owner of the Virginia-based Trump Winery. While his father boasted owning "100 percent" of the Virginia-based Trump Winery with "no mortgage, no debt" at a March campaign rally, his son Eric actually owns the Winery, serving as the company's president. Eric also founded The Eric Trump Foundation (EFT) in 2006, a non-profit charitable organization that benefits the St. Jude Children's Research Hospital. Speaking to Town & Country last year, Eric talked about his financial commitment with the EFT to helping fight childhood cancer: Cancer research and treatment is expensive and cannot be done without substantial financing, which is why it's so important to support their efforts. Doing so has become a major facet of my life and one in which I am incredibly passionate. Like his older siblings, Eric's net worth is estimated to be $150 million according to The Richest.

Tiffany Trump Vivien Killilea/Getty Images Entertainment/Getty Images The 22-year-old daughter of Trump and Marla Maples, Tiffany Trump, graduated from the University of Pennsylvania just this past Saturday. She attended her father's college alma mater where she was a double major in sociology and urban studies. In 2015, Business Insider dubbed Tiffany as one of the "Rich Kids of Instagram." Tiffany has an exceptionally close relationship with her mother, as Maples basically raised her as a single mom in California. That's not to say that Tiffany doesn't also share a special relationship with her father, but she has spent most of her time with Maples. It's unclear whether Tiffany will follow her half-siblings' footsteps in the family business; there are no hard numbers available on Tiffany's net worth given her status as a recent grad, but the cost of her education from high school through undergrad alone was more than $300,000.