US pop star Bruno Mars has taken to Twitter to thank his fans for their support following his mother\'s aneurysm death this week at the age of 55. \"So thankful for all the love during the most difficult time in my life,\" the 27-year-old singer tweeted Thursday. \"I’ll be back on my foot again soon, that’s what mom wants, she told me.\" Bernadette Hernandez died last Sunday. In addition to Mars, she is survived by her musician daughters - Jaime, Tiara, Tahiti and Presley Hernandez - who are to star in an as-yet-untitled WEtv docu-series this fall.