United Kingdom, Aug. 8 -- Frankie Grande has his sister Ariana Grande's back as she decides to step back from public life after her Eternal Sunshine Tour concludes.

The 43-year-old actor shared a sweet message for the 33-year-old singer the night after she wrapped the US leg of her tour at the United Center in Chicago on Thursday (06.08.26), ahead of the final dates at London's The O2 arena from August 15 to September 1.

Frankie posted footage from her last North American show on Instagram, with the caption: "Family forever. I will have your back until the end of time. I am so proud of you and so happy for you.

"Last night was a beautiful celebration of your artistry and the magnificent eternal sunshine family you have built and create...