Harry Styles may be the youngest member of One Direction and the baby in the Styles family but that doesn't mean he acts like one. If anything, Harry Styles is one mature and lovable baby brother. Recently, Styles paid for his older sister's graduation present - a much needed vacation.

The boys of One Direction may act crazy and immature but when it comes to their loved ones, they are anything but. As proof, Harry Styles spent a massive amount of money for his older sister's vacation. Gemma Styles wrapped up her three years in college at the Sheffield University and a vacation is definitely something she needed.

"Harry is giving Gemma a massive treat for getting a first at Sheffield Uni. He's so proud of her as she's worked really hard to get top grades and deserves to have some fun," said the source, adding, "He flew her to Las Vegas and has put her in a posh suite at every stop on the tour with AAA pass access and anything she needs. Plus there's a gift of unlimited shopping during her stay in America for clothes and gadgets. He plans to treat her to a new wardrobe."

It's not surprising that Harry would go through all the means to treat his older sister lavishly. The siblings have been known to be sweet and caring of one another.

"Gemma loves hanging out with her brother and keeping an eye on him. Harry is in awe of her because she's so brainy and got a first, plus the highest marks in the year. He gets homesick sometimes while on tour, so it's great for him to have her there for a while too," shared the insider.

Check out the slideshow to see more of the Styles siblings, Harry and Gemma.

RELATED STORIES