It's getting serious!

Gigi Hadid celebrated her 21st birthday on Saturday, and her boyfriend Zayn Malik took the opportunity to fly his family out from England so their families could meet! The group spent time relaxing on the beach and swimming in ocean in Malibu, and it looks like a great time was had by all.

The "Pillowtalk" crooner's mom Tricia, older sister Doniya, and two younger sisters, Waliyha and Safaa got to know his lady love's mom Yolanda and sister Bella, and we have a sneaky suspicion that an engagement is not far off.

Following her day by the sea, Gigi headed down to catch some performances at Coachella on Sunday night, and continued the celebration with bestie Taylor Swift. T-Swizz presented her pal with a gorgeous birthday cake, and it was the perfect way to cap off a fun-filled weekend!