Natalie and the Downside-Up Birthday - Dandi Daley Mackall - Bog

Natalie couldn't be more excited about her birthday parties, until she discovers she has a "birthday buddy," the not-so-nice Sasha. When Sasha one-ups Nat at every turn, from bigger cupcakes, to horsey rides, to a more purple birthday cake, Nat will have to see past the party balloons to realize who her real friends are, including Jesus.