![Alyson Hannigan wears heart-shaped sunglasses with matching turquoise bikini by the pool | Daily Mail Online Alyson Hannigan wears heart-shaped sunglasses with matching turquoise bikini by the pool | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2013/10/03/article-2442389-187DA07B00000578-356_634x869.jpg)
Alyson Hannigan wears heart-shaped sunglasses with matching turquoise bikini by the pool | Daily Mail Online
![Alyson Hannigan shows off her incredible bikini body as she splashes around on family holiday in Hawaii | Daily Mail Online Alyson Hannigan shows off her incredible bikini body as she splashes around on family holiday in Hawaii | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2013/10/01/article-0-186D39F600000578-268_634x581.jpg)
Alyson Hannigan shows off her incredible bikini body as she splashes around on family holiday in Hawaii | Daily Mail Online
![Make-up free Alyson Hannigan, 39, bares super slim bikini body while on family vacation in Catalina Island | Daily Mail Online Make-up free Alyson Hannigan, 39, bares super slim bikini body while on family vacation in Catalina Island | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2013/09/01/article-2408484-1B8FB2CC000005DC-2_634x599.jpg)
Make-up free Alyson Hannigan, 39, bares super slim bikini body while on family vacation in Catalina Island | Daily Mail Online
![Alyson Hannigan shows off her incredible bikini body as she splashes around on family holiday in Hawaii | Daily Mail Online Alyson Hannigan shows off her incredible bikini body as she splashes around on family holiday in Hawaii | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2013/10/01/article-0-186D386A00000578-603_634x603.jpg)