Eir made another squeak in surprise at this sudden shift in her sister’s behaviour, her cheeks turning an even more vibrant shade of scarlet, although Silfr’s face remained just as blank as before from the brief glimpse she caught of her younger twin’s mien the second prior to her raven-haired head disappeared from plain view behind the lifted frills of the lavish yellow gown as it dove straight forwards betwixt the auburn princess’ plush thighs. Immediately following this, Eir gave a sharp gasp as she next felt the unmistakable slippery texture of her sibling’s tongue slide between her plump labia majora before licking leisurely upwards along the spongy flesh that lay within all the way to her clitoral hood, only to then perform a similar motion in reverse at the same steady pace.
A shiver was sent all the way up Eir’s spine from this opening pair of lingual strokes, and Silfr would be able to clearly taste her sister’s salty-sweet arousal as it exuded from the leaking honeypot, her hands sliding up the length of the elder princess’ creamy legs till they arrived at her knees, upon which both sets of her fingers clamped down like a cat’s claws, digging slightly into the skin to keep Eir’s legs firmly apart so that she may sample her sibling’s cunny for as long as she pleased without interference. Regardless of the effort, Eir had no intention of hindering her twin, especially not when the pointed tip of her sister’s tongue started to nimbly tickle at the pink lining within her genital slit.
Sensual whines were sounded from behind Eir’s bottom lip while her two top teeth she chewed on it as Silfr wormed her oral muscle slightly deeper within her pussy hole, feeling it wriggle just inside the entrance for a brief while alongside her sister’s heated exhales before it was withdrawn and brought upwards to her clit. Silfr then glided her right hand from her twin’s knee inwards along her velvety thigh to slip her narrow index finger into the vacant, seeping aperture, pushing it as deep into Eir’s pussy inlet until her knuckle touched the slightly sticky folds before then proceeding to repeatedly slide the digit back then forth at a steady deliberate pace intermixed with regular rotation, all while the dark-haired sibling revolved her tongue in small circles around the salmon nub just above.
Eir’s semi-stifled groans were now promoted to lustier cries which gave the lung control of the trained vocalists on stage a run for their money in terms of projection and persistence even without the copper-haired princess purposely trying to do so, much to Silfr’s exasperation that such hearty expressions of delectation could very well result in the twins and their semi-public engagement of oral sex from being discovered, although it mercifully seemed that the elder twin’s noisy soughs were intermingled enough with the escalating octaves of the enacting soprano and tenors reverberating about the auditorium to be masked from distinguishment for the time being.
That being said however, Silfr – being the one in closest proximity to her erotically wailing sister – could still recognise Eir’s specific sounds through the rising diapason, and they were starting to make the younger sibling feel a greater riling than before beneath her smart dress, particularly in her lacy panties as her nethers steadily but surely began heating up with titillation even if her mien did not reflect the climbing libido. Uncharacteristic for the ice princess to go against her better judgement, Silfr even went so far as to slot her middlemost digit alongside its fellow within her sister’s cunt, beginning to push, pull and turn her wrist with somewhat greater energy than she had previously shewn knowing full-well that she further risked them both being caught in the prohibited act from making Eir spout her unchecked moans even more spiritedly…though the very notion of such an outcome’s possibility was only adding to the pale-skinned twin’s thrill! Not that Silfr would admit to a concept so crass, of course, even if it was not her twin sister whomst she was fingering.
However, Silfr would not continue with the double digit probing of her elder sibling’s pussy for very long, at least not in the way she currently was. All of a sudden, the younger twin paused both her tongue and hand motions, and withdrew her fingers from out Eir’s now-sopping aperture, as well as her face from the now-erect clitoris before standing straight and upright – if slightly slouched in the shoulders – once more, the dimmed light of the chandelier at her back and casting the princess clad in black in near-silhouette while her arctic-blue eyes pierced through the shadow and loured down on the elder sibling. Eir’s groaning quietened down to softer sighs to regain her expended breath about the same time her dark-haired sister ceased stimulating her privates, looking upwards with hazel optics enlarged with both mild perplexity and slight intimidation as Silfr loomed over her while she still sat slumped.
“Wh-why’d ya stop, Silf…?” Eir eventually broke her silence, her voice little more than a whisper beneath the ongoing belting onstage before resuming her deep breathing, her ample bosom notably rising and lowering in accordance to her in and exhales which the stern eyes of Silfr seemed to be particularly focused on in that instant. Not giving a verbal response, the younger twin’s mitts both shot out and grabbed at the collar of the copper-haired sibling’s gown before they each gave a mighty downwards heave with all the strength Silfr was able to summon in her skinny arms for that instant, wrenching the neckline – along with Eir’s white, floral-patterned brassiere – almost entirely away from the elder sister’s chest, stretching the luxury fabric beyond salvaging and very well nearly splitting the stitching in the process!