The Summer I Turned Pretty creator Jenny Han got in on the fun by getting Jeremiah's legendary dark chocolate mirror glaze cake for her birthday. Han, 45, took to Instagram earlier this month to share highlights from her festivities, which included a party attended by her celebrity friends, including Lauren Graham, Ali Wong and Bill Hader. While Us certainly noticed couple Wong and Hader in the snaps, it was the cake choice that caught social media users' attention since the author appeared to be enjoying a dark chocolate cake with a raspberry coulis filling and a mirror glaze on top.