But de la Renta was a complex man, and there's plenty you probably didn't know.
The line of children's wear launched back in 2012 and includes baby and children's clothing.
De la Renta was born in 1932 in the Dominican Republic and moved to Spain when he was 18 to begin studying art, according to Vogue. His full name is Óscar Aristides de la Renta Fiallo.
De la Renta once dressed fashion icon Jackie Kennedy and even Hillary Clinton, but he decided not to work with current first lady Michelle Obama.
"It is a relation that began poorly and I think it will end the same way," he said. "An anonymous woman on the street is the woman who influences fashion today, not a movie star or a first lady."
According to Scouting magazine, de la Renta began designing Boy Scouts uniforms in 1980 — which included Smokey the Bear’s famous hat.
De la Renta built an orphanage and school for the children of La Romana called La Casa del Niño. The school cares for 1,200 children a day, allowing their mothers to work. Because of his commitments, de la Renta was honored with the Order of Juan Pablo Duarte and the Order of Cristóbal Colón by the Dominican Republic.
De la Renta’s son-in-law Alex, stepdaughter Eliza and adopted son Moises all work for the Oscar de la Renta label.
"Style begins by looking good naked," de la Renta recently told the Telegraph. "It's a discipline. And if you don't dress well every day, you lose the habit. It's not about what you wear, but about how you live your life."
Although de la Renta’s work is everywhere, he most recently designed the wedding gown for Amal Alamuddin as she married George Clooney.
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