Anant Ambani turned 21. And this time around, he gave himself a birthday gift - a much lighter version of himself. He lost 108 kgs in 18 months. At his bash at Antilla in Mumbai, Salman Khan and Mahendra Singh Dhoni congratulated him on his transformation. The other stars spotted at the party were Harbhajan Singh, Sachin Tendulkar, Ranbir Kapoor, John Abraham and Rohit Sharma.