Model parents! Beyoncé and Jay-Z pick up some tips as they show support for Erica Reid's book The Thriving Child at launch

By Sarah Bull

Picking up some tips? Beyoncé and Jay-Z last night attended the launch of Erica Reid's book The Thriving Child

As first time parents, the thought of raising a child to be healthy and happy can sometimes be a daunting one.

And last night Beyoncé and Jay-Z proved that even celebrity parents turn to parenting manuals and guide books for advice, as they attended the launch party for friend Erica Reid's book The Thriving Child.

Beyoncé showed off her stunning post-baby body in a form-fitting teal dress, highlighting her tiny waist with a thin belt for the occasion, while husband Jay-Z in a printed T-shirt and denim jacket.

She's so cute! Jay-Z couldn't resist pinching his beautiful wife's cheeks at the event, held in New York

The 30-year-old singer, who welcomed Blue Ivy, her first child with Jay-Z, in January, left her blonde hair down and straight for the event, pairing her outfit with a pair of hoop earrings.

The pair looked more in love than ever at the party, held at a private residence in New York, with Jay-Z smiling as he playfully pinched his wife's cheeks while the pair posed up for photographers.

Beyoncé and Jay-Z were joined at the event by other famous faces including Mary J. Blige, with the two female singers pulling in author Reid for a tight hug at the event.

Trim: Beyoncé showed off her slim figure in a teal dress at the event, also attended by her mother Tina, and singer Mary J. Blige

Best of friends: Mother-of-two Erica, the wife of X Factor USA's L.A. Reid, was inspired to write her manual due to her children's various allergies and health issues

Reid, the wife of X Factor USA judge L.A. Reid, decided to pen her bestselling book The Thriving Child: Parenting Successfully through Allergies, Asthma and Other Common Challenges after discovering that both her son and daughter suffered from serious allergies and irritations since birth.

Reid, who is mother to 11-year-old daughter Arianna and eight-year-old son Addison, said in a recent interview that she believes in a firm but fair approach to parenting.

She said: 'I love my children, I am very sweet to them but I'm also very firm with them, and they don't get their way with every single thing.

Hugs all round: Beyoncé and Mary were both quick to greet Erica with a big hug as they arrived at the launch

Family dreams: Beyoncé gave birth to daughter Blue Ivy in January, and said she and Jay-Z are definitely hoping to have more children

'The world is not always going to present them with a silver spoon and I want them to learn that now rather than having them wake up shell-shocked in 30 years.'

And Reid's manual is sure to come in useful for Beyoncé in the future, as the singer revealed earlier this week that she and Jay-Z are definitely planning to have more children.

She told Entertainment Tonight: 'I definitely want to have more. I don't know how many. God knows, I don't know yet.'