Oscar winner Diane Keaton congratulated herself on her 77th birthday on Instagram. "Happy Birthday to the love of my life...me!" the actress ("Manhattan") wrote on her birthday on January 5. Keaton also posted a video showing a montage of colorful birthday cakes while a woman - possibly herself - sings "Happy Birthday to me, Happy Birthday, dear Diane" in the background. Laughter is heard at the end of this ditty. Stars including Andie MacDowell, Michelle Pfeiffer, Lucy Hale and Kris Jenner congratulated Keaton under her post.