Ariana Grande turned 21 years old on Thursday and just in time for Miami Beach's biggest pool party of the year.
The singer continued the celebration onstage during Day One of iHeartRadio Ultimate Pool Party on Friday in Florida.
Ariana stood out in a uniquely revealing top and mini-skirt set featuring a geometric pattern of purple circles interspersed with sheer skin-tone panels.
The energetic star entertained while outfitted in a pair of lavender-hued platform boots, and huge dangling earrings that matched her two-piece dress provided more dazzle.
Ariana's long, waist-length hair was pulled back with the top portion bound in a tight ponytail, and the wavy tresses shrouded her bare arms and shoulders like a shawl.
The former star Nickelodeon's Victorious got to celebrate her 21st birthday at the Walt Disney Resort in Florida earlier this week.
She was pictured wearing Minnie Mouse ears while looking cute in a white crop top and a flaring, black-and-white skirt.
Ariana was obviously excited about performing for the thousands of fans at the third annual iHeartRadio Pool Party, which was held at Fountainbleau Miami Beach and presented by VISIT FLORIDA.
'See u soon Miami,' Ariana tweeted earlier on Friday.
The event also brought out Iggy Azalea, Lil Jon and Nick Cannon, who hosted the two-day extravaganza, and Jennifer Lopez, Neon Trees, Tiesto, Magic! and many more were on the list to perform.
Australian singer Iggy Azalea, 24, gave Ariana some competition by wearing white athletic shirts and a white lace top and bra along with a practical pair of silver trainers.
The blonde singer wore her long hair in a high ponytail as she strutted on stage with microphone in hand.
Unbreakable singer Madison Beer, 15, whom Justin Bieber helped to propel to stardom after tweeting a link to one of her YouTube videos, looked cute in white jeans and a black top, as well as rugged black boots.
Us Against Them star Jake Miller showed up in black jeans and black T-shirt topped with a camouflage cap.
Lil Jon performed an energetic show while wearing a rainbow-coloured T-shirt.
Host Nick Cannon was a spirited sight in starry socks, red shorts, denim vest and red cap.
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