In addition to the traditional star-gazing content, new features such as the introduction of daily video horoscopes delivered personally by Grant.
Detailed forecasts for any sign are available, with weekly or monthly forecasts to reveal what the stars have in store. Interacting with AOL's horoscope site, users can "Ask the Psychic" -- a new service where readers can email even their most personal questions to the site's team of psychics for a bespoke answer.
Joanna Bickmore, director of lifestyle & entertainment at AOL Europe, said: "AOL and Russell Grant working together provides a great opportunity to bring exciting content to consumers.
"We strive to offer users a compelling online experience and currently reach more than 17m unique visitors across the UK AOL network.
Kevin J Parker, sales and marketing director of Russell Grant Astrology, said: "With the experience and brand positioning of AOL it was an obvious synergy to partner with such a strong online brand. AOL continues to drive innovation and enhance the user experience and I am privileged that we can provide high quality entertaining content to further engage the users."
The partnership is the latest content deal that AOL has signed this year and follows a partnership with Last.fm that allows AOL Radio users to benefit from Last.fm's free-on-demand service.
AOL also signed a deal with instyle.co.uk, the online arm of fashion and style bible In Style, owned by IPC Media.
Bickmore said: "Deals such as these represent AOL's commitment to working with the world's leading content providers and publishers to provide our users and advertisers with the most compelling offering on the market."