Fans have got one less problem now that Ariana Grande is back to brunette ... hair and throwing it up in her signature high ponytail style for her “Brighter Days Ahead” short film.

Get all the details on Ariana Grande's timeless bridal beauty look Kaitlyn is a former Assistant Style & Beauty Editor at PEOPLE. Whether it's crazy-cool cat eyes or sky-high ponytails ...

The new look is part of Grande's campaign for jewelry ... As the press release explains, "This campaign sees Ariana explore the symbiotic relationship between style and self-expression." ...