Sonic Drive-In has a new, limited treat: the Unicorn Dreams Slush. It arrives nationwide on May 5, but Sonic fans can unlock early access via its app, which recorded 3.3 billion impressions in just three days. 

MSL is the creative agency promoting the drink and its special unicorn horn straw, which comes in four shades: white-to-pink color change, green-to-blue color change, neon green glow in the dark and frost blue glitter.

"When your creative brief includes unicorns, cotton candy and Sonic Drive-In, you know there's magic to uncover. Big ideas only come to life when there’s trust and momentum behind them — and we’re lucky to have both with this brand partner," Matt Zavala, Chief Creative Officer at MSL, told Out to Launch.

Content will run on TikTok, Meta, YouTube Shorts and YouTube. The strong social fan base includes @noellelovesloths with 5.9 million followers.

Sonic is targeting recent guests and Gen Z and Millennial families with young children. Fans are invited to share their own wishes at #WishSipBelieve.

“We developed the Unicorn Dreams Slush to be more than just a drink. It’s an entire culinary experience that’s bursting with fantastical fun and flavor in each sip,” added Mackenzie Gibson, vice president of culinary and menu innovation at Sonic.