"The family along with other relatives and close friends are here to celebrate Sharmila Tagore's birthday," a source told IANS and added that they are staying in a hotel near the Ranthambore National Park.
"A lavish party is being hosted in the hotel," added the source.
Sharmila and her other guests reached here Sunday by car from Jaipur and spent the time visiting the park, which is home to over 60 tigers, including cubs, as of now. In 2013, the overall tiger population was put at 48.
"On Sunday, they visited the park in the afternoon and spent around three hours. During the safari, they spotted five tigers - two adults and three cubs," said a source from the forest department.
He also said that they spent over 15-20 minutes watching T-19, also known as Krishna, and her three cubs. The tigress, which had killed a Sambhar, was busy feasting with her children.
After that they observed the activities of T-28, also known as Star Male, for about 20 minutes.
"Today morning they were in the hotel, but in the afternoon some of the guests visited the park again," said the source.
Saif, Kareena and Sharmila are likely to leave Ranthambore Tuesday.