Justin Timberlake, Kid Cudi, Pharrell, & More Wish Willow Smith for 'Willoween'

Willow Smith is partying twice as hard today. The “Fireball” singer combined her birthday and Halloween into one big holiday called “Willoween.” Justin Timberlake, Jimmy Fallon, Pharrell, Justin Bieber, The-Dream, Mindless Behavior, Queen Latifah, and Taboo of the Black Eyed Peas all joined in wishing the pint-sized pop star for her 11th birthday by holding up signs that read “Happy Willoween.”

Her “big bro” Kid Cudi, who is working on new music with her, hand drew a sign and her siblings Jaden and Trey also showed love to their lil’ sis.

You too can wish Willow by dressing in costume and submitting a photo on her Tumblr page.