When do we ever expect to see Fergie not on trend? The Black Eyed Peas star and soon to be mother was photographed in Rio Di Janeiro, Brazil, on Thursday during a visit to see local youth at a NGO, located within a Favela, Cantagalo - one of city's poorer districts.

The 38-year-old singer smiled and greeted fans who were eager to feel her growing baby bump. As she signed autographs and took photos with her many admirers, Fergie was rocking some serious pre-natal fashion. The pop diva wore blue trousers and a patterned shirt that showcased her growing belly. Her colorfully stylish outfit was paired with matching blue sandals and bright sea green nail polish.

Spring Nail Trend Alert! Green is a big trend this spring for nails. With Emerald being dubbed Pantone's Color of the Year for 2013, shades of green will pop off of any skin tone and make for a trendy bold statement. This botanical hue can be worn many different ways, from shades of seafoam green, vivid green metallics, textured shades, and pastel versions of the color all a part of the 2013 spring nail trend.

Some fun green nail polish shades to try? Check out a few of the following brands and share your trendy green nails with us on Facebook and Twitter:

- Nicole "Respect the World"

- O.P.I. "Green Witch"

- Sally Hansen "Green with Envy"

- Butter London "British Racing"

- Zoya "Suvi"

- Revlon Nail Enamel "Scandalous"

- Pure Ice "Free Spirit"

- Maybelline Color Show "Go Go Green"