Kylie Jenner spent her 4th of July with Jaden Smith and friends in Malibu, Calif. Credit: MAP / Splash News (2)

Talk about fireworks! Kylie Jenner and boyfriend Jaden Smith celebrated the 4th of July holiday together at her dad Bruce Jenner's beach house in Malibu Thursday.

Wearing a pink and black string bikini, the 15-year-old Keeping Up With the Kardashians star hung out on the home's balcony with her 14-year-old actor beau, donning a black tank top. Later, the teen was seen playing in the water while Smith looked on.

Shortly after the family party -- where mom Kris Jenner, sister Kendall Jenner and their friends also hung out, Kylie tweeted about the fun she had: "Amazing fourth. Couldn't be more thankful for the people around me x."

Although she was spotted grabbing frozen yogurt with Smith's pal, Lil Twist, on Wednesday, July 3 -- fueling rumors that she had ended things with Smith -- the teen model denied she was anything more than friends with the 20-year-old rapper on her Twitter page.

"Media always making it seem like I'm dating everyone I'm seen with," she tweeted. "Makes no sense to me. Don't listen to everything u see, people."

In March, Us Weekly exclusively confirmed that Smith and Jenner were indeed dating.

"They're dating," a source said. "It's new, but they've been friends forever."