We've had donut glazed nails, but this twist on the shimmer trend gives it a whole new vibe according Metta Francis, an award-winning London based manicurist and founder of Nails by Mets. "Rainbow glaze is a more colourful update on the donut glaze nails," Francis tells PS UK. "Apply a blend of fun, colourful shades on the nails and then add a pearlescent top coat or pigment to soften the colours. This will provide a beautiful rainbow glazed look. For spring opt for classic pastels and for summer, don't be afraid to reach for your brights!"