During a gig Saturday at SeaWorld in San Antonio for the park’s “Bud & BBQ” country-music series, Simpson graced the stage in a navy-blue dress but quickly changed into her now-signature Daisy Dukes.

Only moments before hitting the stage, she Tweeted, “Get ready for greatness, Shamu.” After leaving the stage — where Simpson appeared to be all smiles — she Tweeted, “Just overcame my fear of sharks by kissing a killer whale!”