Article continues below advertisementAmy Schumer hit back at social media trolls who have criticized the star's recent Instagram activity.After losing more than 50 pounds, the comedian has shared multiple uploads showing off her slimmer frame in short dresses and bikinis, something she rarely used to do.Article continues below advertisementAmy Schumer Feels 'Strong and Beautiful'Source: mega;@amyschumer/instagramAmy Schumer said posting photos of her thinner frame is 'a celebration of life and health - not a cry for help.