The 67-year-old Wind Beneath My Wings crooner tweeted the pregnant reality star, telling her about some of her maternity fashion finds.
She wrote yesterday: â€œI know itâ€™s so last week, but @KimKardashian would look adorable in the maternity clothes they have just on my block!! I buy them myself!!â€
Kim, who is expecting rapper boyfriend Kanye Westâ€™s child this summer, didnâ€™t seem to take offence from Betteâ€™s offer.
The 32-year-old suggested that the pair hit the shops together, replying: â€œLetâ€™s go shopping!â€
Kim has raised eyebrows with her unflattering style choices in recent weeks.
Last week the curvy brunette squeezed her baby bump into a skin-tight leather dress to promote her new film Temptation in New York.