Nick and Vanessa Lachey went for a walk along the coast near Coogee Beach in Sydney today. The couple, who are expecting their first child together, traveled to Australia at the beginning of the week and have been touring the area and relaxing. Nick and Vanessa visited the Sydney Zoo on Tuesday and yesterday Vanessa enjoyed a prenatal massage. Their trip, which is Vanessa's first to the country, might also include a night out for the opening of the new Marquee nightclub. Paris Hilton is expected to attend since her boyfriend, Afrojack, is DJing the party. Nick might soon be the one taking the stage though, if rumors that his former band, 98 Degrees, is reuniting for a tour are true.