Russell Crowe shared a sweet birthday message for his youngest son along with cute snaps, including the two of them flexing their muscles.The 62-year-old took to his X account on Monday to write to his son Tennyson on his 20th birthday.In the post, the Oscar winner shared a trio of photos, including one showing off his slimmed-down physique as he and his youngest child donned tank tops and flexed their arms.He also shared a photo of the two of them enjoying horseback riding next to one another.Finally, he shared a cute snap from nearly two decades ago, proudly holding baby Tennyson.He captioned the gallery of snaps: ’20 years ago today, at 7 minutes to 7am, this amazing young man arrived in our lives. Happy Birthday Tenny.’ Russell Crowe showcased his slimmed-down figure as he flexed his muscles alongside son Tennyson in a 20th birthday tribute shared on XCrowe has undergone significant weight loss over the past year, revealing on the Joe Rogan podcast that he has shed 57 pounds (26 kilograms).The actor also revealed that while he still enjoys a drink, he has drastically cut down his alcohol intake.During the chat, the heavy-set superstar confessed that when he completed his latest film, Nuremberg, he was a hefty 277 pounds (126 kilograms).’I’m 100.9 (222 pounds) now,’ he said, clearly pleased with his new look.Crowe said he was assisted in his transformation by health services platform Way2Well.The actor, who said he is carrying injuries from his physical roles over the years, admitted to receiving injections as part of a wellness program.’I’m not really across the science, but the real benefit I’m getting from these into my shoulders, my knees and also IVs, is that it’s calmed down my body’s inflammation,’ he said.In addition to Tennyson, Russell also has a 25-year-old son named Charles, whom he also had with ex Danielle Spencer. The 62-year-old Oscar winner also shared a photo of the two of them enjoying horseback riding next to one another Finally, he shared a cute snap proudly holding baby Tennyson nearly two decades ago He posted the gallery of snaps on X with a sweet captionRussell was previously married to Australian actress Danielle, 57, with the couple tying the knot at his farm in Nana Glen in April 2003.The couple welcomed two sons together but went their separate ways in 2012 and finalized their divorce six years later.Despite their high-profile split, Danielle previously told Stellar magazine the couple are still friends and see one another as ‘family’. ‘We have a lot of respect for each other and I consider him to be a member of my family,’ she said. ‘The marriage ended, but that didn’t mean our friendship ended. We’ve had holidays together in the past and we can happily sit down and chat.’ Crowe has Tennyson and a 25-year-old son, Charles, with his ex-wife, Danielle Spencer Crowe and 57-year-old Spencer reunited in December Crowe with his actress girlfriend Britney Theriot, 42, in Taormina, Italy, last monthMeanwhile, Crowe has moved on romantically, dating actress Britney Theriot, 42, for six years. The couple appeared at the Taormina Film Festival in Italy last month.They went red carpet official in October 2022 at the Rome premiere of Russell’s movie Poker Face, following the start of their romance in November 2020.Before striking up an intimate connection, the pair had initially met on the set of the thriller Broken City in 2013.A New Orleans native, Theriot is a former actress and previous Saints cheerleader.