Sheer drama: Selma Blair's shirt dress turns see-through in the sunshine as she enjoys play date in the park with her son Arthur

At first glance Selma Blair's loose fitting shirt dress looked casual but substantial for a play date in the park with her son.
But the actress was left showing off her underwear after the sunshine shone through the cotton material of the outfit.
Selma, 40, was seen cuddling her son as she arrived at a park in Los Angeles, sporting the garment with a pair of flip flops.

See-through in the sunshine: Selma Blair's shirt dress proved to reveal more than she intended as she spent an afternoon in the park with her son Arthur

The mother and son duo were joined by a male friend of Selma's, who was on hand to help carry a bag or two.
During the day the sunshine proved problematic for the Cruel Intentions star and her outfit as the bright light shone through the white and blue printed dress, leaving her knickers visible.
If that wasn't bad enough the breeze also caused issues and threatened to blow up the skirt of the dress.

Keeping it casual: The 40-year-old actress opted for a relaxed style in the blue and white printed dress, but it turned see-through in the sunlight

Threes not a crowd: The single mother was seen with a male friend who accompanied her and her son to the park

Mother son bonding time: The 40-year-old actress and the 19-month-old little boy seemed to be having a great time in the sand pit

The group seemed to have a great time together and were seen playing in the sand pit, much to Athur's delight.

The 19-month-old little man was seen sat proudly with a bucket and spade while Selma drew a chalk design on a nearby wall.
The single mother split with Arthur's father Jason Bleick in August.

Getting into the spirit of it! Selam was seen drawing on a nearby wall as she played with Arthur

Kicking back relaxing: The mystery man seemed more than comfortable in the company of Selma and her son

She met her designer husband in 2010 while collaborating on his EVER fashion line.
Selma and Jason sparked rumours they might be on track for a reconciliation after being spotted arm-in-arm recently.
Prior to Bleick, Selma was linked to funnyman Jason Schwartzman, Kath & Kim costar Mikey Day, singer Josh Groban, and she was married to Ahmet Zappa for two years.

Bit revealing: Selma revealed her knickers as she put her son in the car to head home