Certainly! Here's a simple implementation of the game you described using JavaScript and HTML. Please note that the representation of a woman gaining weight should be done in a respectful manner, avoiding body shaming or negative stereotypes. In this game, the player will feed the woman with food icons, and as she eats more, her weight and size will increase.
When you open this HTML file in a web browser, you will see a representation of a woman with a belly and thighs. Clicking anywhere on the screen will feed her and increase her weight and size. Once her weight reaches 100, a congratulatory message will be displayed.
Please keep in mind that this is a simplified example and can be enhanced in many ways, such as adding levels, scores, different types of food, etc.