Lily's Big Day, by Kevin Henkes

<p>Lilly's favorite teacher, Mr. Slinger, is getting married, and Lilly is going to be his flower girl! Well, Lilly, <em>thinks</em> she is going to be his flower girl. It turns out that Mr. Slinger's niece Ginger is the official flower girl. But Lilly&nbsp;rises to the occasion as only Lilly can, turning heartbreak into wedding cake (a delicious three-tiered frosted Swiss cheese, no less), and disappointment into friendship! A #1&nbsp;<em>New York Times</em>&nbsp;bestseller by Caldecott Medalist Kevin Henkes.</p>