A year after she released her first album, hotel heiress Paris Hilton has been spotted having singing lessons.It appears the former jailbird wants to relaunch her singing career with the help of Madonna's teacher.Paris was spotted coming out of a seminar given by vocal coach Seth Riggs - who has also helped Prince and Michael Jackson to stardom.Shw was clutching Seth's book Singing For The Stars and told waiting photographers that the lessons were going well.Her self-titled debut album racked respectable sales of over 600,000 worldwide.And aside from her aspirations of chart domination, the heiress has been checking out the competition at her favourite old night spots in Hollywood.The 26-year-old was spotted with her sister Nicky and pals at LA club Les Deux. The gang took two bodyguards along to try and stop people taking photos of her.© Independent Television News Limited 2007. All rights reserved.