Nicole 'Snooki' Polizzi has offered JWoww pregnancy advice.

The former 'Jersey Shore' star has advised her long-time pal to stay away from painkillers and avoid ''pushing on the toilet'', following the 27-year-old beauty's announcement that she is expecting her first child with boyfriend Roger Matthews in July 2014.

Snooki - who has 16-month-old son Lorenzo with her fiancé Jionni Lavalle - offered up the candid advice in a series of text messages which JWoww posted to Instagram on Thursday (26.12.13).

The message read: ''Sleep safe, keep hydrated, no Advil or Aleeve.

''No pushing on the toilet either (sic).''

JWoww - real name Jennifer Farley - said she and Roger ''couldn't have asked for a better Christmas gift'' and are ''excited'' to become parents, when sharing the pregnancy news with her fans in a blog post on her official website on Christmas Day (25.12.13).

She gushed: ''We are so excited to share this new chapter of our lives with you as we become parents and create more memories with a new addition to our family! Thank you for all your love and support and for being there for us throughout the years! We are extremely happy and cannot wait for our bundle of joy to arrive!''