Bipasha Basu has just realised that she has gained four kilos. The Bong bombshell who is a fitness enthusiast is seeing red

She wants to knock off those extra pounds as soon as she can.

A source says, `A few days ago, she was unwell and was administered a round of antibiotics. As she took it easy during that time of sickness, she ended up gaining four kilos. Now she is in this mad race to lose them.`

Our source adds, `Bipasha is so hellbent on knocking off the extra pounds that she has been hitting the gym with a vengeance and also brought drastic changes in her diet.` With all this when Bips steps on the weighing scales again, she sure would be back to her desired weight.