By JOANNA CRAWLEY FOR MAILONLINE
PUBLISHED: 09:12 GMT, 26 July 2015 | UPDATED: 15:04 GMT, 26 July 2015
She's rumoured to be enjoying a hot new romance with Lewis Hamilton as well as working on her eighth studio album, and it certainly looked like Rihanna's hectic life was catching up with her on Saturday.
The singer was spotted emerging from another late night recording session on Saturday, looking exhausted as she left her West Hollywood recording studio.
As well as working hard on her anticipated new record, the chart-topper is being kept busy by a new man in her life - British Formula One ace Lewis, with the long-time friends reportedly enjoying a string of secret dates in recent weeks, as...