Article continues below advertisementDua Lipa is soaking up the sun - and she brought her sister along for the ride!The 30-year-old pop superstar appeared in a series of sizzling Instagram snaps shared by her younger sister, Rina Lipa, showing the duo lounging poolside during a tropical getaway in Brazil.Article continues below advertisementSource: @rinalipa/InstagramDua Lipa and her sister, Rina, posed in tiny bikinis during their Brazil trip.