The 40-year-old former actress, whose column "Mrs Funnybones" is hugely popular, launched the book on August 18 at a starry event here.
"Happiness is... Seeing your wife's book at no. 1 within a week. @mrsfunnybones has arrived! #MrsFunnyBonesBook #proud," he wrote on Twitter.
Akshay and Twinkle are proud parents of two kids -- Aarav Kumar and Nitara Kumar. The couple have been married for 14 years.
The actor will be next seen in "Singh Is Bliing", "Airlift" and "Housefull 3".