The Mean Girls star pleaded guilty to a probation violation on Wednesday (02Nov11) and Los Angeles County Superior Court Judge Stephanie Sautner sentenced her to 30 days behind bars.
But the actress was not taken into custody straight away - instead, she was ordered to check in with authorities by 9 November (11) and reports suggest the delay is down to her commitment to Playboy editors.
Lohan posed for nude photos last month (Oct11) and she is scheduled to reshoot some of the shots for the pictorial later this week (begs31Oct11).
TMZ.com reports the star's lawyer, Shawn Holley, requested the delay in her client's jail time during a private chat with Judge Sautner, revealing Lohan would be in breach of her contract if she missed the appointment.
The actress is allegedly being paid close to $1 million (£625,000) for stripping off.
The spread will feature in January's (12) issue of Playboy.