Gwyneth Paltrow celebrated her 39th birthday with Beyonce Knowles and Jay-Z.

The 'Contagion' actress was joined by her husband, Coldplay singer Chris Martin, and the superstar couple, who are currently expecting their first child together, for an intimate dinner at Spanish restaurant Tertulia in New York's West Village on Monday (26.09.11).

However, the long-term friends - who recently spent time together at the Glastonbury Festival in the UK where both Beyonce and Chris performed - did not stay out late, with Gwyneth up in the morning to take her daughter Apple, seven, to school.

She was also quick to thank her fans for their birthday wishes, writing on twitter: "Thank you for all of my happy birthday wishes, just read so many ... you guys make my life great, thank you xgp (sic)"

Gwyneth - who also has five-year-old son Moses - has been giving Beyonce pregnancy tips, urging her to pick the right food supplements.

A source said: "Gwyneth has known about this pregnancy for over a month and has been telling Beyonce to drink a shot of wheatgrass each morning and to rub her belly with coconut oil to prevent stretch marks.

"She's also advised her to meditate for an hour every day and soak her feet in ice water to prevent swelling."