Gwyneth Paltrow threw a star-studded bash for her son Moses' birthday on Saturday (06.04.13).

The 40-year-old actress - who released her new healthy cook book 'It's All Good' and launched her fourth fitness studio with exercise expert Tracy Anderson in Los Angeles this week - and her Coldplay star husband Chris Martin were joined by guests including Kate Hudson, Tobey McGuire, Cameron Diaz, Gwen Stefani and Joel Madden, as well as all their children, at their new mansion in Brentwood, California to celebrate ahead of their son's seventh birthday tomorrow (08.04.13).

Rita Ora is looking forward to an ''amazing'' 2013.

The 'R.I.P.' hitmaker is excited about a number of musical projects she has in the pipeline and can't wait to get back on the road next year.

Gwen Stefani feels ''guilty'' for being a working mum.

The No Doubt singer - who has sons Kingston and Zuma with Gavin Rossdale - feels bad about leaving her children while she is touring and she admits she had concerns about rejoining the band after an 11-year-break.

Gwen Stefani admits her marriage has been a struggle.

The No Doubt singer and Bush frontman Gavin Rossdale have been married for 10 years and have sons Kingston, six and Zuma, four, together and while their union is strong, Gwen admitted it hasn't always been easy.

Gwen Stefani used to find motherhood stressful.

The No Doubt singer - who has sons Kingston, six, and four-year-old Zuma with her husband Gavin Rossdale - struggled to juggle the demands of recording the band's first album in ten years, 'Push and Shove', with her home life and being a devoted mother and said she found it ''really hard'' to cope.